1. Department of Cardiology and Institute for Surgical Research, Center for Cardiological Innovation, Oslo University Hospital, Rikshospitalet, Oslo, Norway
2. Institute for Clinical Medicine, University of Oslo, Oslo, Norway
3. School of Medicine, University of Belgrade, Belgrade, Serbia
4. Cardiology Clinic, Clinical Centre of Serbia, Serbia
5. Division of Cardiology, Cardiac Arrhythmias Management Department, Clinique Pasteur, Toulouse, France
6. Service de Cardiologie—Hôpital Timone Adultes, 264 Rue Saint Pierre, Marseille, 13385 Cedex 05, France
7. Department of Heart Disease, Haukeland University Hospital, 5021 Bergen, Norway
8. Department of Clinical Science, University of Bergen, 5021 Bergen, Norway
9. Cardiology Clinic, Emergency Institute for Cardiovascular Diseases and Transplant, University of Medicine and Pharmacy, Tirgu Mures, Romania
10. Intensive Care Unit, Geriatric Cardiology and Medicine Division, Experimental and Clinical Medicine Department, University of Florence and AOU Careggi, Florence, Italy
11. Department of Cardiology, Congenital Heart Disease and Electrotherapy, Silesian Medical University, Silesian Centre for Heart Diseases, Zabrze, Poland
12. Cardiology Department, Ramón y Cajal Hospital, Alcala University, 28034 Madrid, Spain
13. Department of Cardiology, Thrombosis & Drug Research Unit, Aalborg University Hospital, Aalborg, Denmark
14. Department of Cardiology, Institution of Medical Science, Uppsala University, Uppsala, Sweden
15. Department of Internal Medicine I—Cardiology, Palacký University Olomouc, Olomouc, Czech Republic
16. University Heart Center Lübeck, Medical Clinic II (Cardiology/Angiology/Intensive Care Medicine), University Hospital Schleswig-Holstein, Ratzeburger Allee 160, 23538 Lübeck, Germany
17. Unità di Aritmologia, Dipartimento Cardiotoracovascolare, University of Florence, Florence, Italy
18. Head of the Department of Cardiology, KSW 2, Rzeszów, Poland
19. Faculty of Medicine, University of Rzeszów, Rzeszów, Poland
20. Department of Electrophysiology, University Leipzig - Heart Center, 04289 Leipzig, Germany