1. Center for Preventive Doping Research, Institute of Biochemistry German Sport University Cologne Cologne Germany
2. European Monitoring Center for Emerging Doping Agents (EuMoCEDA) Cologne/Bonn Germany
3. Anti‐Doping Laboratory, LSI Medience Corporation Tokyo Japan
4. United States Anti‐Doping Agency (USADA) Colorado Springs Colorado
5. UCLA Olympic Analytical Laboratory, Department of Pathology and Laboratory Medicine David Geffen School of Medicine Los Angeles California