1. Division of Internal Medicine, University Hospital Basel, Switzerland
2. Cardiovascular Research Institute Basel, University Hospital Basel, Switzerland
3. Cardiology Division, University Hospital Basel, Switzerland
4. Swiss Tropical and Public Health Institute, Switzerland
5. University of Basel, Switzerland
6. Department of Sport, Exercise and Health, University of Basel, Switzerland
7. Labormedizinisches Zentrum Dr Risch, Schaan, Principality of Liechtenstein
8. Division of Laboratory Medicine, Kantonsspital Graubünden, Chur, Switzerland
9. Division of Clinical Biochemistry, Medical University, Innsbruck, Austria
10. Private University, Triesen, Principality of Liechtenstein