1. Department of Cardiology, Keio University School of Medicine
2. General Internal Medicine, National Hospital Organization Tokyo Medical Center
3. Medical Affairs Division, Novartis Pharma K.K.
4. Department of Cardiovascular Medicine, Kyorin University Faculty of Medicine
5. Department of Cardiology, National Defense Medical College Hospital
6. Department of Cardiology, Saiseikai Central Hospital
7. Department of Cardiology, National Hospital Organization Saitama National Hospital
8. Department of Cardiology, National Hospital Organization Tokyo Medical Center
9. Department of Cardiology, Saitama Medical University International Medical Center
10. Department of Cardiology, Sakakibara Heart Institute