1. Department of Cardiology and Pneumology, Heart Center; University Medical Center; Göttingen Germany
2. DZHK (German Center for Cardiovascular Research), partner site Göttingen; Göttingen Germany
3. Department of Cardiology; University Hospital; Basel Switzerland
4. Department of Cardiovascular Sciences; University of Leuven; Belgium
5. Department of Cardiology; Medical University of Lodz (MUL) WAM Hospital; Lodz Poland
6. Department of Cardiology; Klinikum Großhadern, Ludwig-Maximilians-Universität Munich; Munich Germany
7. Department of Cardiology; Karolinska Institutet; Stockholm Sweden
8. IDIBAPS, Department of Cardiology; Hospital Clinic Barcelona; Barcelona Spain
9. Department of Cardiovascular Disease; KBC Rijeka; Rijeka Croatia
10. Population Health Research Institute; McMaster University; Hamilton ON Canada
11. Department of Electrocardiology; Medical University of Lodz (MUL); Lodz Poland
12. 2nd Department of Cardiology; Attikon University Hospital; Athens Greece
13. Department of Cardiology; University Hospital; Olomouc Czech Republic
14. Gentofte Hospital; Copenhagen Denmark
15. Slovak Medical University NUSCH; Bratislava Slovakia
16. Medical Research Center; Oulu University Hospital and University of Oulu; Oulu Finland
17. Department of Cardiology; St. Ekaterina University Hospital; Sofia Bulgaria
18. Department of Cardiology; SUSSCH; Banska Bystrica Slovakia
19. Chair and Department of Cardiology, Bieganski Hospital; Medical University of Lodz (MUL); Lodz Poland
20. National Heart and Lung Institute, Imperial College; London UK
21. Department of Internal Medicine and Cardiology; University Hospital Brno; Brno Czech Republic
22. Department of Cardiology; KBC Sestre Milosrdnice; Zagreb Croatia
23. Med. Klinik und Poliklinik I, Technische Universität München, Klinikum rechts der Isar; Munich Germany
24. Department of Cardiology; National Heart Hospital; Sofia Bulgaria
25. Department of Cardiology; Magdalena Klinika; Krapinske Toplice Croatia
26. Department of Cardiology; Acibadem City Clinic Tokuda Hospital; Sofia Bulgaria
27. Department of Cardiology; University Medical Center Utrecht; Utrecht The Netherlands
28. Department of Cardiology; St. Anna Hospital; Sofia Bulgaria
29. Department of Medical Physiology; University Medical Center Utrecht; Utrecht The Netherlands
30. Institute for Social Medicine, Epidemiology and Health Economics, Charité Universitätsmedizin Berlin; Berlin Germany
31. Department of Medical Statistics; University Medical Center Göttingen; Göttingen Germany
32. Department of Cardiology, The Heart Centre, Rigshospitalet, Copenhagen University Hospital, and Department of Clinical Medicine; University of Copenhagen; Copenhagen Denmark
33. Department of Cardiology; Semmelweis University Heart Center; Budapest Hungary