Former University of Michigan neurology professor Dr. Sidney Gilman, exits the U.S. Attorney's office in Manhattan in New York, January 17, 2014. The retired doctor who is cooperating with ... more 
Former University of Michigan neurology professor Dr. Sidney Gilman, exits the U.S. Attorney's office in Manhattan in New York, January 17, 2014. The retired doctor who is cooperating with prosecutors, took the stand on Friday as the government's star witness in the insider trading trial of Mathew Martoma, saying he divulged confidential information about a drug trial to the former SAC Capital Advisors trader. REUTERS/Brendan McDermid (UNITED STATES - Tags: CRIME LAW BUSINESS) less 
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Reuters | Photo By BRENDAN MCDERMID / REUTERS
Fri, Jan 17, 2014 7:54 PM EST