A long-delayed study funded by the World Anti-Doping Agency says one third of athletes may have knowingly doped shortly before they competed at the 2011 track world championships — although few of them were caught at the time.
A long-delayed study funded by the World Anti-Doping Agency says one third of athletes may have knowingly doped shortly before they competed at the 2011 track world championships — although few of them were caught at the time.