1. From the Department of Medicine and Clinical Science, Kyoto University Graduate School of Medicine, Kyoto (Y.M., Y. Saito, N.K., S.K., M.H., M.I., K.K., E.O., I.H., N.T., T.A., N.A., Y.Y., T.Y., H.I., I.M., K.N.); the Division of Cardiology, Kumamoto University School of Medicine, Kumamoto (M.Y., Y. Shimasaki, M.N., H.Y.); and the Diagnostic Science Department, Shionogi & Co, Ltd, Osaka (T.K., H.T.), Japan.