1. Department of Cardiology, Oslo University Hospital, Postboks 4950 Nydalen, 0424 Oslo, Norway
2. Institute for Clinical Medicine, University of Oslo, Postboks 1171, Blindern, 0318 Oslo, Norway
3. Department of Cardiology, Leiden University Medical Center, Albinusdreef 2, 2300 RC Leiden, The Netherlands
4. Department of Cardiovascular Diseases, University of Siena, Policlinico Le Scotte, Viale Bracci 16, 53100 Siena, Italy
5. Department of Cardiology, Umberto I° Hospital, Viala San Francesco 84014 Nocera Inferiore (Salerno), Luigi Vanvitelli University, Italy
6. BHF Centre for Cardiovascular Science, University of Edinburgh, Chancellors Building, Little France Crescent, Edinburgh EH16 4SB, UK
7. Cardiovascular Research & Development Unit, Department of Physiology and Cardiothoracic Surgery, Faculty of Medicine, University of Porto, Al. Prof. Hernâni Monteiro, 4200 – 319 Porto, Portugal
8. Clinic of Cardiology, St. Olavs Hospital, Postboks 3250 Torgarden, 7006 Trondheim, Norway
9. Department of Circulation and Medical Imaging, Norwegian University of Science and Technology NTNU, Trondheim, Postboks 8905, 7491 Trondheim, Norway
10. Department of Cardiology, University Heart Center, University Hospital Zurich, Rämistrasse 100, 8091 Zurich, Switzerland
11. Department of Cardiology, Medical University of Lodz, Kniaziewicza 1/5, 91-347 Lodz, Poland
12. Department of Cardiac Surgery, University Medical Centre Maribor, Ljubljanska ulica 5, 2000 Maribor, Slovenia
13. Department of Cardiology, University Medical Centre Ljubljana, Zaloska cesta 7, 1000 Ljubljana, Slovenia
14. Department of Cardiology, University of Medicine and Pharmacy ‘Carol Davila’, Euroecolab, Institute of Cardiovascular Diseases ‘Prof. Dr. C. C. Iliescu’ Sos. Fundeni 258, sector 2, 022328 Bucharest, Romania
15. Charité Medical Faculty of the Humboldt University Berlin, ECRC, 13125 Berlin, Germany
16. DZHK, Partner site 13125 Berlin, Germany
17. Helios Clinics Berlin-Buch, Cardiology, 13125 Berlin, Germany
18. Cardiovascular Institute, Hospital Clínic, Universitat de Barcelona, Villarroel 170, 08036 Barcelona, Spain
19. Institut d'Investigacions Biomediques August Pi i Sunyer (IDIBAPS); Villarroel 170, 08036 Barcelona, Spain
20. CIBERCV, Instituto de Salud Carlos III, Sinesio Delgado, 4, 28029 Madrid, Spain
21. Department of Cardiology, Clinical Hospital Centre Zemun, University of Belgrade, Faculty of Medicine, Vukova 9, 11080 Belgrade, Serbia
22. Division of Cardiology, Medical University of Vienna, Währinger Gürtel 18-20, 1090 Wien, Austria