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