Alvarez to review domestic violence case

Cook County State's Attorney Anita Alvarez vowed Thursday to review how her office handled domestic-violence charges three months before authorities said a Cicero father killed his wife and daughter and critically injured his son in an alleged case of arson last weekend.

In a statement, Alvarez said she had "serious questions and concerns" about why felony charges were not brought against Nathaniel Beller, 29, last September after he allegedly poured gasoline in the bathtub of his Cicero apartment and threatened to kill his two children.

Last Saturday, after his release from a mental health facility, Beller is suspected of pouring gasoline on his two young children and wife, Taniya Johnson, 33, in a home on Chicago's West Side and igniting them, officials said. Killed were Beller, his wife, and Neriyah, 4, his daughter. Son Naciere, 9, was critically injured.

"This case is a horrific tragedy involving the extremely complicated and challenging crime of domestic violence and the troubling and increasing prevalence of mental illness in criminal defendants," Alvarez said. "...This matter will be reviewed in its entirety and if individuals in this office need to be held accountable for their judgment, that will certainly occur."

Cicero spokesman Ray Hanania said Thursday that Cicero police recommended felony charges against Beller after the September incident, but that the state's attorney's office decided not to pursue that.

A Cicero police report indicated that an assistant state's attorney rejected felony charges because of a lack of evidence and the refusal of Beller's wife to cooperate.

State child-welfare officials removed the children from the home and placed them with an aunt while Cicero police continued to investigate the September incident. Meanwhile, Beller was committed to a mental health facility for the next three months, and the case went to juvenile court to determine custody of the children.

jmeisner@tribune.com

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Google emerges from FTC probe relatively unscathed

SAN FRANCISCO (AP) — Google has settled a U.S. government probe into its business practices without making any major concessions on how the company runs its Internet search engine, the world’s most influential gateway to digital information and commerce.

Thursday’s agreement with the Federal Trade Commission covers only some of the issues raised in a wide-ranging antitrust investigation that could have culminated in a regulatory crackdown that re-shapes Internet search, advertising and mobile computing.

But the FTC didn’t find any reason to impose radical changes, to the relief of Google and technology trade groups worried about overzealous regulation discouraging future innovation. The resolution disappointed consumer rights groups and Google rivals such as Microsoft Corp., which had lodged complaints with regulators in hopes of legal action that would split up or at least hobble the Internet’s most powerful company.

Google is still trying to settle a similar antitrust probe in Europe. A resolution to that case is expected to come within the next few weeks.

After a 19-month investigation, Google Inc. placated the FTC by agreeing to a consent decree that will require the company to charge “fair, reasonable and non-discriminatory” prices to license hundreds of patents deemed essential to the operations of mobile phones, tablet computers, laptops and video game players.

The requirement is meant to ensure that Google doesn’t use patents acquired in last year’s $ 12.4 billion purchase of Motorola Mobility to thwart competition from mobile devices running on software other than Google‘s Android system. The products vying against Android include Apple Inc.’s iPhone and iPad, Research in Motion Ltd.’s BlackBerry and Microsoft‘s Windows software.

Google also promised to exclude, upon request, snippets copied from other websites in capsules of key information shown in response to search requests. The company had insisted the practice is legal under the fair-use provisions of U.S. copyright law. Nonetheless, even before the settlement, Google already had scaled back on the amount of cribbing, or “scraping,” of online content after business review site Yelp Inc. lodged one of the complaints that triggered the FTC investigation in 2011.

In another concession, Google pledged to adjust the online advertising system that generates most of its revenue so marketing campaigns can be more easily managed on rival networks.

Google, though, prevailed in the pivotal part of the investigation, which delved into complaints that the Internet search leader has been highlighting its own services on its influential results page while burying links to competing sites. For instance, requests for directions may turn up Google Maps first, queries for video might point to the company’s own site, YouTube, and searches for merchandise might route users to Google Shopping.

Although the FTC said it uncovered some obvious instances of bias in Google‘s results during the investigation, the agency’s five commissioners unanimously concluded there wasn’t enough evidence to take legal action.

“Undoubtedly, Google took aggressive actions to gain advantage over rival search providers,” said Beth Wilkinson, a former federal prosecutor that the FTC hired to help steer the investigation. “However, the FTC’s mission is to protect competition, and not individual competitors.”

Two consumer rights groups lashed out at the FTC for letting Google off too easily.

“The FTC had a long list of grievances against Google to choose from when deciding if they unfairly used their dominance to crush their competitors, yet they failed to use their authority for the betterment of the marketplace,” said Steve Pociask, president of the American Consumer Institute.

John Simpson of frequent Google critic Consumer Watchdog asserted: “The FTC rolled over for Google.”

David Wales, who was the FTC’s antitrust enforcement chief in 2008 and early 2009, said the agency had to balance its desire to prevent a powerful company from trampling the competition against the difficulty of proving wrongdoing in a rapidly changing Internet search market.

“This is a product of the FTC wanting to push the envelope of antitrust enforcement without risking the danger of losing a case in in court,” said Wales, who wasn’t involved with the case and is now a partner at the law firm Jones Day.

FTC Chairman Jon Leibowitz said the outcome “is good for consumers, it is good for competition, it is good for innovation and it is the right thing to do.” Before reaching its conclusion, the FTC reviewed more than 9 million pages of documents submitted by Google and its rivals and grilled top Internet industry executives during sworn depositions.

The Computer & Communications Industry Association, a technology trade group, applauded the FTC for its handling of the high-profile case.

“This was a prudent decision by the FTC that shows that antitrust enforcement, in the hands of responsible regulators, is sufficiently adaptable to the realities of the Internet age,” said Ed Black, the group’s president.

The FTC has previously been criticized for not doing more to curb Google‘s power. Most notably, the FTC signed off on Google‘s $ 3.2 billion purchase of online advertising service DoubleClick in 2008 and its $ 681 million acquisition of mobile ad service AdMob in 2010. Google critics contend those deals gave the company too much control over the pricing of digital ads, which account for the bulk of Google‘s revenue.

If Google breaks any part of the agreement, Leibowitz said the FTC can fine the company up to $ 16,000 per violation. Last year, the FTC determined that Google broke an agreement governing Internet privacy, resulting in a $ 22.5 million fine, though the company didn’t acknowledge any wrongdoing.

Google‘s ability to protect its search recipe from government-imposed changes represents a major victory for a company that has always tried to portray itself as force for good. The Mountain View, Calif., company has portrayed its dominant search engine as a free service that is constantly tweaking its formula so that people get the information they desire more quickly and concisely.

“The conclusion is clear: Google‘s services are good for users and good for competition,” David Drummond, Google‘s top lawyer, wrote in a Thursday blog post.

Google‘s tactics also have been extremely lucrative. Although Google has branched into smartphones and many other fields since its founding in a Silicon Valley garage in 1998, Internet search and advertising remains its financial backbone. The intertwined services still generate more than 90 percent of Google‘s revenue, which now exceeds $ 50 billion annually.

Throughout the FTC investigation, Google executives also sought to debunk the notion that the company’s recommendations are the final word on the Internet. They pointed out that consumers easily could go to Microsoft‘s Bing, Yahoo or other services to search for information. “Competition is just a click away,” became as much of a Google mantra as the company’s official motto: “Don’t be evil.”

Microsoft cast the FTC’s investigation as a missed opportunity.

“The FTC’s overall resolution of this matter is weak and — frankly —unusual,” Dave Heiner, Microsoft‘s deputy general counsel, wrote on the company’s blog. “We are concerned that the FTC may not have obtained adequate relief even on the few subjects that Google has agreed to address.”

FairSearch, a group whose membership includes Microsoft, called the FTC’s settlement “disappointing and premature,” given that European regulators might be able to force Google to make more extensive changes.

“The FTC’s inaction on the core question of search bias will only embolden Google to act more aggressively to misuse its monopoly power to harm other innovators,” FairSearch asserted.

Yelp also criticized the FTC’s handling of the case, calling “it a missed opportunity to protect innovation in the Internet economy, and the consumers and businesses that rely upon it.”

Investors had already been anticipating Google would emerge from the inquiry relatively unscathed.

Google‘s stock rose 42 cents Thursday to close at $ 723.67. Microsoft, which is based in Redmond, Wash., shed 37 cents, or 1.3 percent, to finish at $ 27.25.

In a research note Thursday, Macquarie Securities analyst Benjamin Schachter described the settlement as “the best possible outcome” for Google. “We believe that the terms of the agreement will have very limited negative financial or strategic implications for the company.” Schachter wrote.

___

AP Technology Writer Barbara Ortutay in New York contributed to this story.

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R&B singer Frank Ocean cited for pot possession

BRIDGEPORT, Calif. (AP) — Grammy-nominated R&B singer Frank Ocean is facing a marijuana possession charge after police say he was pulled over on New Year’s Eve in California’s Eastern Sierra Nevada for driving more than 90 mph in a 65 mph zone.

The Mono County Sheriff’s Department says officers stopped Ocean’s black BMW at about 4:30 p.m. Dec. 31 as he was heading southbound on U.S. 395.

Sheriff’s spokeswoman Jennifer Hansen says a strong odor of marijuana wafted out as a deputy approached the vehicle.

Hansen says the deputy found a small bag of marijuana on the 25-year-old Ocean, whose legal name is Christopher Breaux (broh).

She says the Beverly Hills resident was cited for marijuana possession and released.

Calls and an email message sent to Ocean’s representatives Thursday were not immediately returned.

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Scant Proof Is Found to Back Up Claims by Energy Drinks

Energy drinks are the fastest-growing part of the beverage industry, with sales in the United States reaching more than $10 billion in 2012 — more than Americans spent on iced tea or sports beverages like Gatorade.

Their rising popularity represents a generational shift in what people drink, and reflects a successful campaign to convince consumers, particularly teenagers, that the drinks provide a mental and physical edge.

The drinks are now under scrutiny by the Food and Drug Administration after reports of deaths and serious injuries that may be linked to their high caffeine levels. But however that review ends, one thing is clear, interviews with researchers and a review of scientific studies show: the energy drink industry is based on a brew of ingredients that, apart from caffeine, have little, if any benefit for consumers.

“If you had a cup of coffee you are going to affect metabolism in the same way,” said Dr. Robert W. Pettitt, an associate professor at Minnesota State University in Mankato, who has studied the drinks.

Energy drink companies have promoted their products not as caffeine-fueled concoctions but as specially engineered blends that provide something more. For example, producers claim that “Red Bull gives you wings,” that Rockstar Energy is “scientifically formulated” and Monster Energy is a “killer energy brew.” Representative Edward J. Markey of Massachusetts, a Democrat, has asked the government to investigate the industry’s marketing claims.

Promoting a message beyond caffeine has enabled the beverage makers to charge premium prices. A 16-ounce energy drink that sells for $2.99 a can contains about the same amount of caffeine as a tablet of NoDoz that costs 30 cents. Even Starbucks coffee is cheap by comparison; a 12-ounce cup that costs $1.85 has even more caffeine.

As with earlier elixirs, a dearth of evidence underlies such claims. Only a few human studies of energy drinks or the ingredients in them have been performed and they point to a similar conclusion, researchers say — that the beverages are mainly about caffeine.

Caffeine is called the world’s most widely used drug. A stimulant, it increases alertness, awareness and, if taken at the right time, improves athletic performance, studies show. Energy drink users feel its kick faster because the beverages are typically swallowed quickly or are sold as concentrates.

“These are caffeine delivery systems,” said Dr. Roland Griffiths, a researcher at Johns Hopkins University who has studied energy drinks. “They don’t want to say this is equivalent to a NoDoz because that is not a very sexy sales message.”

A scientist at the University of Wisconsin became puzzled as he researched an ingredient used in energy drinks like Red Bull, 5-Hour Energy and Monster Energy. The researcher, Dr. Craig A. Goodman, could not find any trials in humans of the additive, a substance with the tongue-twisting name of glucuronolactone that is related to glucose, a sugar. But Dr. Goodman, who had studied other energy drink ingredients, eventually found two 40-year-old studies from Japan that had examined it.

In the experiments, scientists injected large doses of the substance into laboratory rats. Afterward, the rats swam better. “I have no idea what it does in energy drinks,” Dr. Goodman said.

Energy drink manufacturers say it is their proprietary formulas, rather than specific ingredients, that provide users with physical and mental benefits. But that has not prevented them from implying otherwise.

Consider the case of taurine, an additive used in most energy products.

On its Web site, the producer of Red Bull, for example, states that “more than 2,500 reports have been published about taurine and its physiological effects,” including acting as a “detoxifying agent.” In addition, that company, Red Bull of Austria, points to a 2009 safety study by a European regulatory group that gave it a clean bill of health.

But Red Bull’s Web site does not mention reports by that same group, the European Food Safety Authority, which concluded that claims about the benefits in energy drinks lacked scientific support. Based on those findings, the European Commission has refused to approve claims that taurine helps maintain mental function and heart health and reduces muscle fatigue.

Taurine, an amino acidlike substance that got its name because it was first found in the bile of bulls, does play a role in bodily functions, and recent research suggests it might help prevent heart attacks in women with high cholesterol. However, most people get more than adequate amounts from foods like meat, experts said. And researchers added that those with heart problems who may need supplements would find far better sources than energy drinks.

Hiroko Tabuchi contributed reporting from Tokyo and Poypiti Amatatham from Bangkok.

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Brunswick to sell Hatteras, Cabo, lays off 105

The GT63 is the latest model of motor yacht from Hatteras, a unit of Brunswick Corp. (Hatteras Yachts / January 3, 2013)

Reuters

5:49 p.m. CST, January 3, 2013

Recreational boat maker Brunswick Corp. said Thursday that it is seeking buyers for its sportfishing convertible yacht brands Hatteras and Cabo, and that it laid off about 105 workers at its New Bern facility in North Carolina.

The facility had about 545 employees as of November.

Brunswick bought Hatteras for $80 million in 2001 and Cabo for $60 million in 2006.

"The current plan assumes that the eventual purchaser will retain both the physical plant and the workforce of Hatteras/Cabo," Chief Executive Dustan McCoy said.

Hatteras builds luxury motoryachts and sportfishing convertible yachts.

The boat maker suffered a slide in earnings as consumers turned away from splashing money on luxurious items like boats after the recession, and was forced to restructure its operations.

The lay off will affect 75 full-time and about 30 temporary workers, and help Brunswick "better adjust to market conditions," spokesperson Dan Kuberan told Reuters.

The New Bern plant makes Hatteras and Cabo Yachts.

The company said it expects to record charges of between $70 million and $80 million in relation to the changes announced today, a major part of which will be recorded in the fourth quarter ended December.

Brunswick shares were marginally down at $31.37 in trading after the bell. They closed at $31.51 on the New York Stock Exchange on Thursday.

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Chicago man charged in estranged wife's slaying in Munster

A Chicago man with a history of domestic violence arrests has been charged with the murder of his estranged wife in Munster, Ind., early New Year’s Day, authorities said.

Margarito Valdivia, 44, of the 10800 block of South Troy Street, is being held without bail in the slaying of his estranged wife, Erica Valdivia, 33, early on Tuesday, Munster Police said in a news release this afternoon. The attack at a home in the 800 block of Boxwood Drive in Munster also injured Erica Valdivia’s boyfriend, police said.

Erica Valdivia, whom the Lake County coroner’s office said suffered blunt force trauma to the head in an apparent homicide, had been separated from her husband for about four months, according to police.

Margarito Valdivia is believed to have driven to the Boxwood Drive home early Tuesday, gone in and confronted his wife and her boyfriend, police said. He hit the boyfriend in the head “numerous times” as he drove the boyfriend from the home, police said in the release.

Once the boyfriend was outside, Margarito Valdivia went back into the home and began beating his wife, police said.

Police were called to the Boxwood Drive home about 5:45 a.m. Tuesday and found the boyfriend outside with a severe cut to the head. Officers tried to go into the house, but were at first unable to, as Margarito Valdivia had barricaded himself inside. After a SWAT team was called, police sent a remote-controlled robot into the home, and he surrendered.

Police entered the home and found Erica Valdivia lying in a bathroom, with “major trauma” to the head, including her face, police said. She was taken to Community Hospital in Munster, where she was declared dead at 10:04 a.m. Tuesday, according to the coroner’s office.

The Lake County, Ind., prosecutor’s office charged Margarito Valdivia with murder and felony battery today, police said. Court information was not immediately available, but he was being held without bail in Lake County Jail.

Court records show that Margarito Valdivia has Cook County arrests dating back to 1990, when he was arrested on a domestic violence charge and an order of protection was lodged against him. The charges were later dropped. In 1994, he was charged with domestic battery and resisting arrest and was sentenced to a year’s probation after being found guilty of the resisting arrest charge, according to court records.

In 1997, Margarito Valdivia was charged with criminal damage and having a firearm without a gun owner’s permit, and given two years court supervision following a guilty plea. A 2000 domestic battery charge was dropped, but in August 2012 he was found guilty of battery after an attack July 23 in the 9800 block of South Commercial Avenue and sentenced to a year’s conditional discharge, records show.

At the time of the battery arrest, he was still living at the same home in the 10600 block of South Avenue N that the coroner’s office listed as Erica Valdivia’s home address.

lford@tribune.com

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Judge rejects part of Apple App Store suit vs Amazon

SAN FRANCISCO (Reuters) – A U.S. judge on Wednesday rejected part of Apple Inc‘s lawsuit against Amazon.com Inc‘s use of the term App Store, ruling Apple cannot bring a false advertising claim against the online retailer.

U.S. District Judge Phyllis Hamilton in Oakland, California, granted Amazon‘s motion for partial summary judgment, which only challenged Apple’s false advertising allegations. Apple leveled other claims against Amazon, including trademark infringement.

An Apple spokeswoman declined to comment, and an Amazon representative could not be reached immediately.

Amazon has stepped up competition against Apple in recent years, launching its cheaper Kindle tablet computer to go after the dominant iPad and trying to lure mobile application developers to its Kindle platform.

One of the first public clashes in their tussle was Apple’s 2011 lawsuit.

Apple accused Amazon of misusing what it calls its APP STORE to solicit developers for a mobile software download service. However, Amazon said its so-called Appstore has become so generic that its use could not constitute false advertising.

In a legal filing last year, Amazon added that even Apple Chief Executive Tim Cook and his predecessor, Steve Jobs, used the term to discuss rivals. Cook commented on “the number of app stores out there” and Jobs referred to the “four app stores on Android.”

In her ruling on Wednesday, Hamilton wrote that the mere use of “Appstore” by Amazon cannot be taken as a representation that its service is the same as Apple’s.

“Apple has failed to establish that Amazon made any false statement (express or implied) of fact that actually deceived or had the tendency to deceive a substantial segment of its audience,” Hamilton wrote.

A trial on Apple’s remaining claims is scheduled for August.

The case is Apple Inc v. Amazon.com Inc et al, U.S. District Court, Northern District of California, No. 11-01327.

(Additional reporting by Alistair Barr in San Francisco; Editing by Tim Dobbyn and Jeffrey Benkoe)

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U.S. soul singer Bobby Womack says he has signs of dementia

(Reuters) – U.S. singer-songwriter Bobby Womack said he is beginning to show early symptoms of Alzheimer’s disease, including trouble remembering names and song lyrics.

“The doctor said, ‘You have signs of Alzheimer’s,’” Womack, 68, told Britain’s BBC Radio 6 music station over the weekend. “He said it’s not bad yet but it’s going to get worse.”

He added: “How can I not remember songs that I wrote? That’s frustrating.”

The 2009 Rock and Roll Hall of Fame inductee, whose hits include “Woman’s Gotta Have It” and “If You Think You’re Lonely Now,” suffered a number of health problems in the past year.

In March it was disclosed that he was diagnosed with colon cancer, which was later successfully treated, and he also underwent what was termed a “minor heart procedure.”

Other recent health issues included prostate cancer, pneumonia and collapsed lungs.

The soul veteran in October won the best album award from the British magazine Q for his 2012 release, “The Bravest Man in the Universe,” beating out much younger competition.

Womack got his start in the music business as the lead singer in the soul group The Valentinos, which he formed with his brothers, and played guitar for Sam Cooke.

He also wrote The Rolling Stones’ first chart topper in the UK, 1964′s “It’s All Over Now.”

(Reporting by Eric Kelsey, editing by Jill Serjeant and Cynthia Osterman)

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Hillary Clinton Is Discharged From Hospital After Blood Clot

Hillary Rodham Clinton, whose globe-trotting tour as secretary of state was abruptly halted last month by a series of health problems, was discharged from a New York hospital on Wednesday evening after several days of treatment for a blood clot in a vein in her head.

The news of her release was the first welcome sign in a troubling month that grounded Mrs. Clinton — preventing her from answering questions in Congress about the State Department’s handling of the lethal attack on an American mission in Libya or being present when President Obama announced Senator John Kerry as his choice for her successor when she steps down as secretary of state.

“Her medical team advised her that she is making good progress on all fronts, and they are confident she will make a full recovery,” Philippe Reines, a senior adviser to Mrs. Clinton, said in a statement.

Mrs. Clinton, 65, was admitted to NewYork-Presbyterian/Columbia hospital on Sunday after a scan discovered the blood clot. The scan was part of her follow-up care for a concussion she sustained more than two weeks earlier, when she fainted and fell, striking her head. According to the State Department, the fainting was caused by dehydration, brought on by a stomach virus. The concussion was diagnosed on Dec. 13, though the fall had occurred earlier that week.

The clot was potentially serious, blocking a vein that drains blood from the brain. Untreated, such blockages can lead to brain hemorrhages or strokes. Treatment consists mainly of blood thinners to keep the clot from enlarging and to prevent more clots from forming, and plenty of fluids to prevent dehydration, which is a major risk factor for blood clots.

Photographed leaving the hospital, Mrs. Clinton and her husband, former President Bill Clinton, and their daughter, Chelsea, appeared elated. In a Twitter post on Wednesday, Chelsea Clinton said, “Grateful my Mom discharged from the hospital & is heading home. Even more grateful her medical team confident she’ll make a full recovery.”

Dr. David J. Langer, a brain surgeon and associate professor at Hofstra North Shore-LIJ School of Medicine, said that Mrs. Clinton would need close monitoring in the next days, weeks and months to make sure her doses of blood thinners are correct and that the clot is not growing. Dr. Langer is not involved in her care.

Mrs. Clinton’s illness cuts short what would have been a victory lap for her at the State Department. With only a few weeks before the end of President Obama’s first term — the time frame she set for own departure — she will be able to do little more than say goodbye to her troops.

But she will, at least theoretically, be able to testify before the Senate and House about the attack on the American mission in Benghazi, Libya, which killed four Americans, including Ambassador J. Christopher Stevens. She was not able to appear at a hearing in December because of her illness. Republicans, who have sharply criticized the Obama administration’s handling of the attack and its aftermath, had demanded that she appear to explain the department’s role, though in recent days they have modulated their request.

Mrs. Clinton’s blood clot formed in a large vein along the side of her head, behind her right ear, between the brain and the skull. The vein, called the right transverse sinus, has a matching vessel on the left side. These veins drain blood from the brain; blockages can cause strokes or brain hemorrhages. But if only one transverse sinus is blocked, the vein on other side can usually handle the extra flow.

In one sense, Mrs. Clinton was lucky: a clot higher in this drainage system, in a vessel with no partner to take the overflow, would have been far more dangerous, according to Dr. Geoffrey T. Manley, the vice chairman of neurological surgery at the University of California, San Francisco. He is not involved in her care.

The fact that Mrs. Clinton had a blood clot in the past — in her leg, in 1998 — suggests that she may have a tendency to form clots, and may need blood-thinners long-term or even for the rest of her life, Dr. Manley said.

One major risk to people who take blood thinners is that the drugs increase bleeding, so blows to the head from falls or other accidents — like the fall that caused Mrs. Clinton’s concussion — become more dangerous, and more likely to cause a brain hemorrhage. Even so, the medication should not interfere with Mrs. Clinton’s career, Dr. Manley said.

“There are lots of people running around on anticoagulants today,” he said. “I don’t see any way it would have any long-term consequences.”

He also said there was no reason to think that this type of clot would recur; he said he had treated many patients for the same condition and had never seen one come back with it again.

Dr. Langer said the vein blocked by the clot might or might not reopen. Sometimes, he said, the clot persists and the body covers it with tissue that closes or narrows the blood vessel. As long as the vein on the other side of the head is open, there is no problem for the patient.

One thing that is unclear, and that may never be known for sure, is what caused Mrs. Clinton’s blood clot. Around the second week in December, she reportedly contracted a stomach virus that caused vomiting and dehydration, passed out, fell and struck her head. A concussion was diagnosed several days after the fall, on Dec. 13, and the public was told Sunday that she had a blood clot, though its location was not revealed until the next day.

She had several risk factors for clots, including dehydration and her previous history of a clot. In addition, women are more prone than men to this type of clot, particularly when dehydrated. The fall may also have been a factor, though it is not clear whether her head injury was serious enough to have caused a blood clot. The type of clot she had is far more likely to be associated with a skull fracture than with a concussion, several experts said.

Did overwork — frequent overseas trips, perpetual jet lag, high-pressure meetings — make her ill? Mrs. Clinton has kept up a punishing schedule since she declared her candidacy for president in 2007. Having logged more than 950,000 miles and visited 112 countries, she is one of the most-traveled secretaries of state in history. She has put on weight and in recent times appeared fatigued. But the same could be said of plenty of people who do not develop clots in their heads.

“You cannot tell me that her hard work resulted in this,” Dr. Langer said. “I can’t imagine that you could make that judgment.”

In theory, Dr. Manley said, exhaustion can weaken the immune system temporarily, and lower a person’s resistance to infections like the stomach virus that apparently started Mrs. Clinton’s problems. But in his opinion, the most important contributing factor to her blood clot was probably the head injury from her fall.

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Net worth of world's richest rose by $241B in 2012

The richest people on the planet got richer in 2012, adding $241 billion to their collective net worth, according to the Bloomberg Billionaires Index, a daily ranking of the world's 100 wealthiest individuals.

The aggregate net worth of the world's top moguls stood at $1.9 trillion at the market close on Dec. 31, according to the index. Retail and telecommunications fortunes surged about 20 percent on average during the year. Of the 100 people who appeared on the final ranking of 2012, only 16 registered a net loss for the 12-month period.

"Last year was a great one for the world's billionaires," said John Catsimatidis, the billionaire owner of Red Apple Group, in an e-mail written poolside on his BlackBerry in the Bahamas. "In -- that will give them an advantage."

Amancio Ortega, the Spaniard who founded retailer Inditex SA, was the year's biggest gainer. The 76-year-old tycoon's fortune increased $22.2 billion to $57.5 billion, according to the index, as shares of Inditex, operator of the Zara clothing chain, rose 66.7 percent.

"It's an amazing company that has done great and the gains are quite justified given its performance," said Christodoulos Chaviaras, an analyst at Barclays Plc in London who has had an "equalweight" rating on Inditex for about a year. "Can they repeat that? It will be harder. A lot of the positive news is already reflected in the share price."

Global stocks soared in 2012. The MSCI World Index gained 13.2 percent during the year to close at 1,338.50 on Dec. 31. The Standard and Poor's 500 Index rose 13.4 percent to close at 1,426.19.

European stocks surged in the second half of the year. The Stoxx Europe 600 is up 19.6 percent since June 4, advancing as the European Central Bank introduced bond-buying programs, S&P upgraded Greece's debt and German business confidence rose more than forecast. The benchmark gauge's 14.4 percent advance for the year was the best annual return since 2009.

Carlos Slim, the telecommunications magnate who controls Mexico's America Movil SAB, remained the richest person on Earth for the year. The 72-year-old's net worth rose $13.4 billion -- or 21.6 percent -- through Dec. 31, making him the second-biggest gainer by dollars.

Gains by Slim's industrial conglomerate, Grupo Carso, and Grupo Financiero Inbursa, his banking and insurance operation, more than offset the decline posted by America Movil, his biggest holding. The largest mobile phone operator in the Americas by subscribers fell 5.8 percent to close at 14.9 pesos at the end of the year.

"America Movil is no longer the growth story that it has been, given the increase in Latin American wireless penetration over the last five years," said Chris King, an analyst at Stifel Nicolaus & Co. in Baltimore, Md. "It continues to generate a very high amount of cash flow and has the best set of telecom assets across Latin America."

According to King, one of Slim's biggest challenges will be dealing with regulation in Mexico and Colombia designed to punish or even-out the market share between America Movil and its competitors. Of the 14 analysts who cover the stock, 71 percent have a buy rating on the company, with an average target price of 19.15 pesos per share, according to data compiled by Bloomberg.

U.S. software mogul Bill Gates, 57, ranks second on the list, trailing Slim by $12.5 billion. The Microsoft co-founder added $7 billion to his net worth as shares of the Redmond, Wash.-based company rose 2.9 percent. Microsoft stock accounts for less than 20 percent of the billionaire's fortune.

Warren Buffett, 82, lost his title as the world's third- richest man to Ortega Aug. 6. The Berkshire Hathaway chairman gained $5.1 billion during the year, even after donating 22.3 million Berkshire Class B shares in July to charity. The billionaire, who has pledged to give away most of his fortune, spent much of the year pressing for higher taxes on the wealthy.

"On incomes of over $1 million, the excess $1 million should have a minimum tax of 30 percent. And then over $10 million, 35 percent," Buffett said in an interview with Charlie Rose in November. "Tax law should be progressive. And I think that when people make $15 million or $20 million or $200 million and pay a 10 percent rate, something should be done about it."

IKEA founder Ingvar Kamprad, 86, is the world's fifth- richest person with a $42.9 billion fortune. The complex ownership structure behind IKEA, the world's largest furniture retailer, became more transparent in August after IKEA's franchisor published its financial performance publicly for the first time. His net worth rose 16.6 percent in 2012.

Brazil's Eike Batista, 56, was the year's biggest loser by dollars, falling $10.1 billion. The commodities maven, who vowed a year ago that he'd become the world's wealthiest man by 2015, sold a 5.63 percent stake in his EBX Group in March to Abu Dhabi's Mubadala Development.

As part of the deal, he pledged an unspecified additional stake in 2019 if he fails to meet a 5 percent annual return on the sovereign wealth fund's $2 billion investment, according to a person with knowledge of the deal. Batista now ranks 75th in the world with a $12.4 billion net worth. On March 27, he was worth $34.5 billion and ranked 8th on the Bloomberg index.

"Next year is going to be a lot of work for Eike," said Lucas Brendler, who helps manage about 6 billion reais at Banco Geracao Futuro de Investimentos in Porto Alegre, Brazil. "It's going to be a year for him to recover investors' confidence, and to leave the realm of theory and start delivering results. The EBX companies have great growth potential."

Batista's former title as the richest Brazilian is now held by 73-year-old banker Jorge Paulo Lemann, who ranks 37th with an $18.8 billion fortune. The country's second-richest person is Dirce Camargo, the matriarch behind Camargo Correa SA, the Sao Paulo-based conglomerate that has interests in cement, electricity and Havaianas flip-flops. Her net worth is $13.4 billion, according to the Bloomberg ranking.

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