1. Gottsegen György Országos Kardiológiai Intézet Budapest Hungary
2. Východoslovenský ústav srdcovych a cievnych chorôb a.s. Košice Slovakia
3. Medical University of Łódź, Central University Hospital Łódź Poland
4. Liverpool Heart and Chest Hospital Liverpool UK
5. Centre Hospitalier Régional de la Citadelle Liège Belgium
6. Medtronic, Inc. Minneapolis Minnesota USA
7. Sana Klinikum Berlin Lichtenberg Klinik für Innere Medizin II, Kardiologie Berlin Germany
8. Department of Cardiology Kepler University Hospital Linz Linz Austria
9. Second Division of Cardiology, Cardiac Thoracic and Vascular Department Azienda Ospedaliero Universitaria Pisana Pisa Italy
10. Na Homolce Hospital Prague Czech Republic
11. Cardioangiologisches Centrum Bethanien Frankfurt Germany
12. Med. Klinik II Universtätsklinikum Schleswig‐Holstein Campus Lübeck