1. Division of Cardiology, Osaka Rosai Hospital
2. Division of Cardiology, Osaka General Medical Center
3. Division of Cardiology, Amagasaki Chuo Hospital
4. Cardiovascular Division, Osaka Police Hospital
5. Department of Medical Informatics, Osaka University Graduate School of Medicine
6. Division of Cardiology, Kawanishi City Hospital
7. Department of Cardiology, Rinku General Medical Center
8. Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine