1. Division of Cardiology and Strokology, Department of Internal Medicine and Therapeutics, Osaka University Graduate School of Medicine
2. Cardiovascular Division, Osaka National Hospital
3. Division of Cardiology, Osaka Prefectural General Hospital
4. Cardiovascular Division, Osaka Police Hospital
5. Division of Cardiology, Osaka Rosai Hospital
6. Division of Cardiology, Sakurabashi Watanabe Hospital