1. From the Division of Cardiology, Kokura Memorial Hospital, Kitakyushu, Japan (S.K., M.I., T.D., M.H., K.Y., Y.S., T.A., S.S., K.K., K.A., K.S., M.G., H.Y., H.N., M.N.); Division of Cardiology, Chidoribashi Hospital, Fukuoka, Japan (T.H., A.N., Y.T., F.T.); and the Second Department of Internal Medicine, University of Occupational and Environmental Health, Japan School of Medicine, Kitakyushu, Japan (S.S.).