1. Department of Cardiovascular Diseases, University Hospital Leuven, Herestraat 49, 3000 Leuven, Belgium
2. Department of Cardiology, University Medical Centre Ljubljana, Ljubljana, Slovenia
3. Department of Pharmacology, Gazi University Institute of Health Sciences, Ankara, Turkey
4. Atatürk Chest Diseases and Chest Surgery Education and Research Hospital, Ankara, Turkey
5. Department of Cardiology, Medical University of Łodz, Łodz, Poland
6. Department of Cardiology, Oslo University Hospital, Oslo, Norway
7. Klinik für Innere Medizin und Kardiologie, St. Vinzenz Hospital, Cologne, Germany
8. Department of Circulation and Imaging, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway
9. Department of Cardiology, University Clinical Hospital Centre Zemun, University of Belgrade, Serbia