1. Laboratory of Sports Medicine, Aristotle University, Thessaloniki, Greece
2. Department of Heart Disease, Haukeland University Hospital, Bergen, Norway
3. Unité Biologie et Médecine du Sport, Hôpital Pontchaillou, Rennes, France
4. University Hospital Gasthuisberg, Leuven, Belgium
5. Department of Cardiology, Radboud University Hospital and Department of Sports Cardiology and Cardiac Rehabilitation, St Maartens Kliniek, Nijmegen, The Netherlands
6. Sports Medicine Department, University Institute of Movement Sciences, Roma, Italy
7. Institute of Biochemistry, German Sport University, Cologne, Germany
8. Department of Rehabilitation Sciences, Leuven, Belgium