1. White Plains Hospital New York
2. University of Calgary Calgary Alberta Canada
3. Heart Center Bad Neustadt Bad Neustadt Germany
4. Asian Heart & Vascular Centre Singapore
5. Adventist Cardiovascular Institute Buenos Aires Argentina
6. University of Occupational and Environmental Health Hospital Japan
7. Clinique Pasteur Toulouse France
8. Korea University Medical Center Seoul Korea
9. Heart Center Leipzig at the University of Leipzig Leipzig Germany
10. Vanderbilt University Medical Center Nashville Tennessee
11. C.S. Mott Children‘s Hospital Ann Arbor Michigan
12. Duke University Medical Center Durham North Carolina
13. Wake Forest Baptist Medical Center North Carolina
14. VA Greater Los Angeles Healthcare System Los Angeles California
15. Mayo Clinic Rochester Minnesota
16. The Valley Hospital Ridgewood New Jersey
17. Cardio Arrhythmology Center Rome Italy
18. University of Lethbridge Lethbridge Alberta Canada
19. Auckland City Hospital Auckland New Zealand
20. Hospital Renascentista Pouso Alegre Minas Gerais Brazil
21. Department of Cardiovascular Sciences Leuven Belgium
22. Cleveland Clinic Cleveland Ohio