Incidents
Nielsen positive 25/04/2010 Positive test ID 784
Nielsen tested positive after winning Stage 8 of the Vuelta a Mexico.
Teams and people
Products
Sources
- Another cyclist tests positive for clenbuterol, claims contamination, VeloNews, 18/01/2011
- Danish rider positive for Clenbuterol from 2010 Vuelta Mexico, Cyclingnews.com, 18/01/2011