This photo provided by Stanford News Service, shows Alvin Roth taking a phone call, after being awarded the Nobel economics prize, at his home in Menlo Park, Calif. on Monday, Oct. 15, 2012. Roth, 60, and Lloyd Shapley, 89, two American scholars, were awarded the Nobel economics prize on Monday, for studies on the match-making that takes place when doctors are coupled up with hospitals, students with schools and human organs with transplant recipients. The work of Roth and Shapley has sparked a flourishing field of research and helped improve the performance of many markets, the Royal Swedish Academy of Sciences said. (AP Photo/ Stanford News Service, Linda A. Cicero) MANDATORY CREDIT

Associated Press
This photo provided by Stanford News Service, shows Alvin Roth taking a phone call, after being awarded the Nobel economics prize, at his home in Menlo Park, Calif. on Monday, Oct. 15, 2012.  Roth, 60, and Lloyd Shapley, 89, two American scholars, were awarded the Nobel economics prize on Monday, for studies on the match-making that takes place when doctors are coupled up with hospitals, students with schools and human organs with transplant recipients.  The work of Roth and Shapley has sparked a flourishing field of research and helped improve the performance of many markets, the Royal Swedish Academy of Sciences said.  (AP Photo/ Stanford News Service, Linda A. Cicero) MANDATORY CREDIT
This photo provided by Stanford News Service, shows Alvin Roth taking a phone call, after being awarded the Nobel economics prize, at his home in Menlo Park, Calif. on Monday, Oct. 15, 2012. Roth, 60, and Lloyd Shapley, 89, two American scholars, were awarded the Nobel economics prize on Monday, for studies on the match-making that takes place when doctors are coupled up with hospitals, students with schools and human organs with transplant recipients. The work of Roth and Shapley has sparked a flourishing field of research and helped improve the performance of many markets, the Royal Swedish Academy of Sciences said. (AP Photo/ Stanford News Service, Linda A. Cicero) MANDATORY CREDIT
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