For the next several years he was consumed with the fen-phen cases, but argued he worked under the authority of partners who made the key decisions.

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He said that one of the problems with fen-phen, a diet drug combo that wound up causing heart-valve problems, was that doctors were too eager to hand them out.

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Chesley probably regrets getting involved in the Kentucky fen-phen case now, but he was eager enough back in 1999.

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