1. Lomonosov State University, Moscow
2. Argentinean Society of Arrhythmias (SADEC), Buenos Aires
3. Argentinean Society of Arrhythmias (SADEC), Buenos-Ayers
4. Lomonosov State University, cardiologist of Department of Arrhythmology, Moscow
5. Humanitas Research Hospital, Milan
6. Grodno State Medical University, Grodno
7. Kuban State Medical University, Krasnodar
8. Higher School of Medicine of Al-Farabi University, Almaty
9. Regional Odessa Center of Cardiosurgery, Odessa
10. Cardiology Hospital of the Lithuanian University of Health Sciences Kauno klinikos, Kaunas
11. North-Western State Medical University named after I.I. Mechnikov, St-Peterburg
12. Hospital Giovan Battista Grassi, Ostia lido, Rome
13. MedElect Clinic, Moscow