1. Cardiovascular Division, Osaka National Hospital
2. Division of Cardiology, Department of Medicine, Nihon University School of Medicine
3. Cardiovascular Center, Osaka Gyoumeikan Hospital
4. Department of Cardiovascular Medicine, Ehime Prefectural Imabari Hospital
5. Division of Coronary Heart Disease, Hyogo College of Medicine
6. Department of Cardiology, Hyogo Prefectural Awaji Medical Center
7. Division of Cardiovascular Medicine, Akabane Central General Hospital