1. Doping Control Laboratory Seibersdorf, Seibersdorf Labor GmbH, A‐2444 Seibersdorf Austria
2. European Monitoring Center for Emerging Doping AgentsGerman Sport University Cologne Am Sportpark Muengersdorf 6 50933 Cologne Germany
3. Institute of Biochemistry/Center for Preventive Doping ResearchGerman Sport University Cologne Am Sportpark Muengersdorf 6 50933 Cologne Germany