Ronald Williams

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** FILE ** Ronald Williams (right), chairman and chief executive officer of Aetna of the United States, speaks during the session "A Road Map to Sustainable Recovery" at the World Economic Forum in Davos, Switzerland, on Sunday, Jan. 31, 2010. With him are Azim Premji (left), chairman of Wipro, India, and Peter Sands, group chief executive of Standard Chartered Bank of the United Kingdom. (AP Photo/Virginia Mayo)