By Corey Flintoff

The former head of Russia’s anti-doping laboratory told The New York Times he helped to conceal doping by top Russian competitors in the 2014 Olympics. Russian officials are denying the report.

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Source:: http://www.npr.org/2016/05/15/478148954/russian-officials-deny-allegations-of-state-sponsored-athlete-doping?utm_medium=RSS&utm_campaign=sports