1. Center for Preventive Doping Research ‐ Institute of BiochemistryGerman Sport University Cologne Am Sportpark Müngersdorf 6 50933 Cologne Germany
2. European Monitoring Center for Emerging Doping Agents Cologne Germany
3. Swiss Laboratory for Doping Analyses, University Center of Legal Medicine, Genève and LausanneCentre Hospitalier Universitaire Vaudois and University of Lausanne Epalinges Switzerland