1. From the Department of Cardiovascular Center, Osaka Red Cross Hospital, Osaka, Japan (K.N., M.T., K.F., K.U., H.I., F.H., T.M., T.I., M.T.); Division of Laboratory Medicine, Kokura Memorial Hospital, Kitakyushu, Japan (K.I.); and Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan (N.S., T.K., K.O.).