1. Department of Cardiology, Thorax Center Erasmus MC, University Medical Center Rotterdam Rotterdam The Netherlands
2. Department of Cardiovascular Diseases University of Zagreb School of Medicine and University Hospital Center Zagreb Zagreb Croatia
3. Department of Cardiology University Hospital Leuven Leuven Belgium
4. Division of Cardiology, Department of Cardiovascular Diseases Cliniques Universitaires St. Luc Brussels Belgium
5. Pôle de Recherche Cardiovasculaire (CARD), Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain Louvain Belgium
6. Department of Cardiac and Vascular Diseases Krakow Jagiellonian University Medical College, John Paul II Hospital Krakow Poland
7. Antwerp University Hospital Antwerp Belgium
8. Clinic of Cardiac and Vascular Diseases, Faculty of Medicine Vilnius University Vilnius Lithuania
9. INIBIC, CIBERCV, Complejo Hospitalario Universitario de A Coruña A Coruña Spain
10. Department of Advanced Biomedical Sciences Federico II University of Naples Naples Italy
11. Faculty of Medicine Heart Center Freiburg University, University of Freiburg Freiburg Germany
12. Fondazione Policlinico Universitario Agostino Gemelli IRCCS Rome Italy
13. Department of Cardiology, Clinical Sciences Lund University and Skåne University Hospital Lund Sweden
14. Onassis Cardiac Surgery Centre Athens Greece
15. Department of Cardiac Surgery University Hospital Leuven Leuven Belgium
16. Department of Cardiovascular Surgery and Transplantology, Institute of Cardiology Jagiellonian University Medical College, John Paul II Hospital Krakow Poland
17. Clinic for Cardiology University Hospital Zurich Zurich Switzerland
18. Department of Cardiac Surgery University of Zagreb School of Medicine and University Hospital Center Zagreb Zagreb Croatia
19. Department of Medicine Karolinska Institute Stockholm Sweden