1. White Plains Hospital , White Plains, 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 , Kitakyushu , 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 , Winston-Salem, 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 , KU Leuven, Leuven , Belgium
22. Cleveland Clinic , Cleveland, Ohio