1. Division of Cardiology, Japanese Red Cross Otsu Hospital
2. Department of Cardiology, Tenri Hospital
3. Department of Cardiovascular Medicine, Shiga University of Medical Science
4. Division of Cardiology, Kobe City Medical Center General Hospital
5. Cardiovascular Center, Sakurabashi Watanabe Hospital
6. Division of Cardiology, National Hospital Organization Osaka National Hospital
7. Cardiovascular Center, Shiroyama Hospital
8. Cardiovascular Center, Namba Kurotobi Heart Clinic
9. Department of Cardiology, Ogaki Municipal Hospital
10. Department of Cardiology, Saiseikai Izuo Hospital
11. Heart Rhythm Center, Okayama Heart Clinic
12. Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center
13. Department of Cardiology, Hyogo Prefectural Amagasaki General Medical Center
14. Division of Arrhythmia and Electrophysiology, Nishinomiya Watanabe Cardiovascular Center
15. Department of Heart Failure and Transplantation, National Cerebral and Cardiovascular Center
16. Department of Clinical Epidemiology, Hyogo College of Medicine
17. Department of Cardiovascular Medicine, Kyoto University Graduate School of Medicine
18. Department of Cardiology, Hirakata Kosai Hospital