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U.S. Anti-Doping Agency (USADA)

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Month: May 2011

Two athletes competing in taekwondo

US Taekwondo Athlete, Nguyen, Accepts Sanction For Doping Violation

May 27, 2011 USADA announced today that Jonathan Nguyen of Chandler, Arizona, an athlete in the sport of Taekwondo, has tested positive for a prohibited substance and accepted a suspension for his doping offense. Nguyen, 25, tested positive for methylhexaneamine, a stimulant, as a result of a urine sample collected at the US Open International

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