1. Department of Cardiovascular Diseases, University of Siena, Policlinico Le Scotte, Viale Bracci 16, 53100 Siena, Italy
2. Department of Cardiology, Leiden University Medical Center, Albinusdreef 2, 2300 RC Leiden, The Netherlands
3. Department of Cardiology, Umberto I° Hospital Nocera Inferiore (Salerno), Luigi Vanvitelli University, Corso Vittorio Emanuele 121, 80121 Naples, Italy
4. BHF Centre for Cardiovascular Science, University of Edinburgh, Chancellors Building, Little France Crescent, Edinburgh EH16 4SB, UK
5. Department of Physiology and Cardiothoracic Surgery, Cardiovascular Research & Development Unit, Faculty of Medicine, University of Porto, Alameda Prof. Hernâni Monteiro, 4200-319 Porto, Portugal
6. Department of Cardiology, University Heart Center, University Hospital Zurich, Rämistrasse 100, 8091 Zurich, Switzerland
7. Department of Cardiology, Medical University of Lodz, Kniaziewicza 1/5, 91-347 Lodz, Poland
8. Department of Cardiac Surgery, University Medical Centre Maribor, Ljubljanska ulica 5, 2000 Maribor, Slovenia
9. Department of Cardiology, University Medical Centre Ljubljana, Zaloska cesta 7, 1000 Ljubljana, Slovenia
10. Institut Clínic Cardiovascular, Hospital Clínic, Universitat de Barcelona, Villarroel 170, 08036 Barcelona, Spain
11. Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Villarroel 170, 08036 Barcelona, Spain
12. CIBERCV, Instituto de Salud Carlos III, Villarroel 170, 08036 Barcelona, Spain
13. 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
14. Department of Cardiology, Oslo University Hospital, Postboks 4950 Nydalen, 0424 Oslo, Norway
15. University of Oslo, Postboks 1171, Blindern, 0318 Oslo, Norway
16. Department of Cardiology, Imperial College Healthcare NHS Trust, Fulham Palace Road, London, UK