1. Center for Preventive Doping Research - Institute of Biochemistry; German 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 Lausanne, Centre Hospitalier Universitaire Vaudois and University of Lausanne Epalinges Switzerland