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, Kurashiki Central Hospital
5. Department of Cardiology, Shizuoka General Hospital
6. Department of Cardiology, Kokura Memorial Hospital
7. Department of Cardiology, Mitsubishi Kyoto Hospital
8. Department of Cardiology, Hyogo Prefectural Amagasaki General Medical Center
9. Department of Cardiovascular Medicine, Kobe City Medical Center General Hospital
10. Department of Cardiology, Shizuoka City Shizuoka Hospital
11. Department of Cardiology, Japanese Red Cross Wakayama Medical Center
12. Department of Cardiology, Hamamatsu Rosai Hospital
13. Department of Cardiology, Juntendo University Shizuoka Hospital
14. Department of Cardiology, Tenri Hospital
15. Cardiovascular Center, Osaka Red Cross Hospital
16. Department of Cardiology, Kishiwada City Hospital
17. Division of Cardiology, Shimada Municipal Hospital
18. Department of Cardiovascular Medicine, Shiga University of Medical Science