1. Department of Cardiovascular Medicine, Saga University
2. Department of Clinical Epidemiology, Hyogo College of Medicine
3. Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University
4. Department of Cardiology, Kokura Memorial Hospital
5. Department of Cardiology, Kishiwada City Hospital
6. Department of Cardiology, Tenri Hospital
7. Department of Cardiology, Hyogo Prefectural Amagasaki General Medical Center
8. Department of Cardiology, Kitano Hospital
9. Department of Cardiology, Koto Memorial Hospital
10. Department of Cardiology, Kindai University Nara Hospital
11. Department of Cardiovascular Medicine, Kobe City Medical Center General Hospital
12. Department of Cardiovascular Medicine, Kobe City Nishi-Kobe Medical Center
13. Department of Cardiology, Kansai Denryoku Hospital
14. Department of Cardiology, Osaka Red Cross Hospital
15. Department of Cardiology, Shizuoka City Shizuoka Hospital
16. Department of Cardiology, Hamamatsu Rosai Hospital
17. Department of Cardiology, Shiga University of Medical Science Hospital
18. Department of Cardiology, Japanese Red Cross Wakayama Medical Center
19. Department of Cardiology, Shimabara Hospital
20. Department of Cardiology, Shizuoka General Hospital
21. Department of Cardiology, Kurashiki Central Hospital
22. Department of Cardiology, Mitsubishi Kyoto Hospital
23. Division of Cardiology, Shimada Municipal Hospital
24. and Department of Cardiology, Juntendo University Shizuoka Hospital