1. Center for Preventive Doping Research/Institute of Biochemistry, German Sport University Cologne, Am Sportpark Müngersdorf 6, 50933 Cologne, Germany
2. CER Groupe − Département Santé, Rue du Point du Jour 8, 6900 Marche-en-Famenne, Belgium
3. European Monitoring Center for Emerging Doping Agents (EuMoCEDA), Am Sportpark Müngersdorf 6, 50933 Cologne, Germany