1. Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine
2. Department of Environmental Medicine and Population Sciences, Osaka University Graduate School of Medicine
3. Division of Cardiology, Osaka General Medical Center
4. Division of Cardiology, National Hospital Organization, Osaka National Hospital
5. Division of Cardiology, Amagasaki Chuo Hospital
6. Division of Cardiology, Osaka Police Hospital
7. Division of Cardiology, Kansai Rosai Hospital
8. Division of Cardiology, Rinku General Medical Center
9. Division of Cardiology, Kobe Ekisaikai Hospital