1. From the Division of Cardiology (K.Y., T.N., M.N., T.D., M.H., Y.S., S.S., K.A., K.K., K.S., M.I., H.Y., H.N., M.N.) and the Division of Laboratory Medicine, Kokura Memorial Hospital (K.I.), Kitakyushu, Japan; and the Department of Cardiovascular Medicine, Kyoto University Graduate School of Medicine (T.K.), Kyoto, Japan.