Noah talks to Dr. Charles Yesalis, an epidemiologist and expert on performance enhancing drugs at Penn State University, about drug use among the Olympic athletes. Yesalis says the new I.O.C. test for EPO won't detect use by athletes who quit taking the drug a week or so before the games. (5:00)
>>> Anabolic Steroids in Sport and Exercise, by Dr. Charles Yesalis, is published by Human Kinetics Publishing, Jan. 2000.
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