1. National Cardiovascular Institute, Bratislava Slovakia
2. Niguarda Hospital Milano Italy
3. Catania University Ferrarotto Hospital Catania Italy
4. University Hospital Bari Italy
5. Meir Medical Center Kfar‐Saba, Sackler Faculty of Medicine Tel‐Aviv University Israel
6. Clinical Center of Serbia, Pacemaker Center Belgrade Serbia
7. Medical University of Lodz Sterling University Hospital Lodz Poland
8. Institute for Clinical and Experimental Medicine Prague Czech Republic
9. Heart Center Semmelweis University Budapest Hungary
10. State Research Institute of Circulation Pathology Novosibirsk Russian Federation
11. Scientific Center for Cardiovascular Surgery Moscow Russian Federation
12. Onassis Cardiac Surgery Center Athens Greece
13. Clinic Emergency Hospital Bucharest Romania
14. Amosov National Institute of Cardiovascular Surgery Kiev Ukraine
15. University Medical Center Ljubljana Slovenia
16. Boston Scientific Milano Italy