1. Uppsala University, Institut för Medicinska Vetenskaper, Akademiska sjukhuset, Ingång 40, Plan 5, 75185 Uppsala, Sweden
2. Department of Anesthesia and Perioperative medicine, Ghent University, Ghent, Belgium
3. Department of Cardiology, Oslo University Hospital, Rikshospitalet, Oslo, Norway
4. University Vall d'Hebron, Barcelona, Spain
5. Cardiology Department, Hôpital Timone, Marseille, France
6. Department of Congenital Heart Diseases, Institute of Cardiology, Warsaw, Poland
7. Medical Clinic I, University Clinic Aachen, Aachen, Germany
8. Department of Cardiology, GIGA Cardiovascular Sciences, Heart Valve Clinic, University Hospital Sart Tilman, University of Liège Hospital,Liège, Belgium
9. Centro Cardiologico Monzino, IRCCS, Milano, Italy