The International Association of Athletics Federations (IAAF) has denied accusations that it suppressed a study proving that a third of top athletes have broken drug rules.
The Sunday Times recently claimed that the IAAF stopped the publication of a survey from the 2011 Daegu World Championships, though the sports organization says that it "never vetoed publication of this article."
The survey asked participants about their prior drug use and, according to the Sunday Times, 29 to 34 percent of the 1,800 athletes admitted to using performance-enhancing drugs within the previous 12 months.
The IAAF is the international governing body for athletics.