1. Division of Cardiology, Yokohama City University Medical Center
2. Division of Cardiology, Teikyo University School of Medicine
3. Second Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health
4. Division of Cardiology, Saiseikai Yokohamashi Nanbu Hospital
5. Department of Cardiology, Tokyo Metropolitan Tama Medical Center
6. Tokeidai Memorial Hospital Cardiovascular Center
7. Kansai Rosai Hospital Cardiovascular Center
8. Cardiovascular Division, Mombetsu General Hospital
9. Department of Cardiology, Kawasaki Medical School
10. Division of Cardiology, Mitsui Memorial Hospital
11. Division of Cardiology, Department of Internal Medicine, Iwate Medical University School of Medicine
12. Division of Cardiology, Fujisawa City Hospital
13. Department of Cardiology, Tokai University
14. Department of Cardiology, Sakurabashi Watanabe Hospital
15. Department of Cardiology, NTT Medical Center Tokyo
16. Department of Biostatistics, Yokohama City University
17. Department of Cardiology, Sakakibara Heart Institute
18. Department of Cardiology, Kyorin University Graduate School of Medicine, Division of Cardiology
19. Ageo Central General Hospital