1. Clinical Research Support Center, Mie University Hospital
2. Department of Cardiology, Rinku General Medical Center
3. Department of Cardiology, Showa University Northern Yokohama Hospital
4. Department of Cardiology, Mie University Faculty of Medicine
5. Cardiovascular Center, Japanese Red Cross Nagoya Daini Hospital
6. Yokohama City University Medical Center
7. Department of Cardiovascular Medicine, Nihon University Itabashi Hospital
8. Mie Heart Center
9. Division of Cardiology, Teikyo University Hospital
10. Cardiovascular Center, Fukuoka Sanno Hospital
11. Division of Cardiology, Kokura Memorial Hospital