1. Doping Control Laboratory Seibersdorf Seibersdorf Labor GmbH Seibersdorf Austria
2. European Monitoring Center for Emerging Doping Agents German Sport University Cologne Cologne Germany
3. Clinical Trial Unit ‘Srebrnjak’ Children's Hospital Zagreb Croatia
4. Faculty of Dental Medicine and Health University of Osijek ‘Josip Juraj Strossmayer’ Osijek Croatia
5. School of Medicine University of Osijek ‘Josip Juraj Strossmayer’ Osijek Croatia
6. Personalized Medicine ‘St. Catherine’ Hospital Zagreb Croatia
7. Nursing Department Catholic University of Croatia Zagreb Croatia
8. Institute of Biochemistry/Center for Preventive Doping Research German Sport University Cologne Cologne Germany