1. Heart Center Leipzig; Leipzig Heart Institute
2. Belgrade University; Clinical Centre of Serbia
3. University of Leipzig
4. Hospital Clinic de Barcelona
5. Leiden University Medical Center
6. Uppsala University
7. University of Modena and Reggio Emilia, Policlinico di Modena
8. Hospital Clínic; University of Barcelona
9. Internal Medicine Clinic; ‘Carol Davila’ University of Medicine; Colentina University Hospital
10. National & Kapodistrian University of Athens School of Medicine
11. Centre Hospitalier Universitaire Trousseau; University of Tours
12. Attikon University Hospital; National and Kapodistrian University of Athens
13. Royal Melbourne Hospital; University of Melbourne
14. UZ Brussel
15. University of Liverpool and Liverpool Heart & Chest Hospital; Aalborg University
16. University of Tours
17. San Gerardo Hospital, ASST-Monza
18. Universidade de Lisboa
19. University of Birmingham
20. Cardiocentro Ticino
21. University of Groningen
22. St Antonius Hospital
23. University of Central Lancashire