1. From the National Cerebral and Cardiovascular Center, Suita (S.Y., H.O.), the Department of Cardiology, Osaka Police Hospital, Osaka (A.H.), the Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University (K. Kaikita), and the Department of General Medicine, Kumamoto University Hospital (K. Matsui), Kumamoto, the Department of Cardiology, National Hospital Organization Kyoto Medical Center, Kyoto (M.A.), the Department of Cardiovascular Medicine, Kitasato University...