1. Department of Cardiovascular Medicine, Saga University
2. Department of Medical Statistics, Osaka Metropolitan University Graduate School of Medicine
3. Department of Cardiovascular Medicine, Saga-Ken Medical Centre Koseikan
4. Department of Cardiology, Miyazaki Medical Association Hospital
5. Department of Cardiology, Sasebo City General Hospital
6. Department of Pharmacotherapy, Meiji Pharmaceutical University
7. Department of Cardiovascular Medicine, New Tokyo Hospital
8. Department of Cardiology, Faculty of Medicine, University of Tsukuba