Denise Betsema says positive doping test caused by contaminated supplement Jan 21, 2020 Denise Betsema at the Middelkerke cyclocross race (Picture: Getty Images) Denise Betsema says her positive doping test was caused by a contaminated substance. Tags: Cyclocross Doping News Racing Share 0 Share on Facebook Tweet Tweet on Twitter +1 +1 on Google Plus
