1. Department of Cardiovascular Medicine, Saga University, Japan (M.N.).
2. Department of Clinical Epidemiology, Hyogo College of Medicine, Nishinomiya, Japan (T.M.).
3. Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University, Japan (H.S., H.W., S.S., T. Kato, T. Kimura).
4. Division of Cardiology, Kokura Memorial Hospital, Kitakyushu, Japan (K.Y., K.A.).
5. Department of Cardiovascular Medicine, Shiga University of Medical Science Hospital, Otsu, Japan (Y.N.).
6. Department of Cardiovascular Medicine, Kobe City Medical Center General Hospital, Japan (Y.F.).
7. Division of Cardiology, Shizuoka General Hospital, Japan (T.T.).
8. Department of Cardiovascular Center, Osaka Red Cross Hospital, Japan (K.N.).
9. Division of Cardiology, Kurashiki Central Hospital, Japan (K.K.).
10. Division of Cardiology, Wakayama Red Cross Hospital, Wakayama, Japan (M.T.).