1. Department of Cardiology, Hirakata Kohsai Hospital
2. Department of Clinical Epidemiology, Hyogo College of Medicine
3. Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University Graduate School of Medicine
4. Department of Cardiovascular Medicine, Saga University
5. Department of Cardiology, Juntendo University Shizuoka Hospital
6. Department of Cardiology, Sendai Kousei Hospital
7. Department of Cardiology, Kokura Memorial Hospital
8. Department of Cardiology, Japanese Red Cross Wakayama Medical Center
9. Department of Cardiology, Kurashiki Central Hospital
10. Department of Cardiology, Kawaguchi Cardiovascular and Respiratory Hospital
11. Department of Cardiology, Shizuoka General Hospital
12. Department of Cardiology, Showa University Fujigaoka Hospital
13. Department of Cardiology, Showa University Koto Toyosu Hospital