1. Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University
2. Division of Cardiology, Yokohama City University Medical Center
3. Department of Clinical Epidemiology, Hyogo College of Medicine
4. Division of Cardiology, Shizuoka General Hospital
5. Division of Cardiology, Kobe City Medical Center General Hospital
6. Division of Cardiology, Tenri Hospital
7. Division of Cardiology, Kokura Memorial Hospital
8. Division of Cardiology, Kurashiki Central Hospital