epa01715308 Dominican weightlifter Yudelquis Contreras (L) looks on as the President of the Dominican Weightlifting Federation, Bolivar Vargas (R) gestures, during a press conference in Santo Domingo, Dominican Republic, 30 April 2009. The Dominican Olympic Committee said on 29 April Yudelquis Contreras is one of six athletes who tested positive for CERA. EPA/ORLANDO BARRIA