FILE - In this Feb. 11, 2009 file photo, Chris Viehbacher CEO of Sanofi-Aventis SA, gestures while announcing the 2008 full year result in Paris. French drug maker Sanofi-Aventis SA has agreed to buy ... more 
FILE - In this Feb. 11, 2009 file photo, Chris Viehbacher CEO of Sanofi-Aventis SA, gestures while announcing the 2008 full year result in Paris. French drug maker Sanofi-Aventis SA has agreed to buy Genzyme Corp. in a sweetened all-cash deal that values the U.S. biotechnology company at $20.1 billion, ending months of corporate haggling. less 
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Associated Press | Photo By Michel Euler, file
Thu, Feb 17, 2011 4:45 PM EST