1. From the Toyohashi Heart Center, Toyohashi, Japan (Tsuyoshi Ito, M.T., K.N., M.E., Y.K., Tatsuya Ito, M.K., N.T., M.H., E.T., T.S.); Okinaka Memorial Institute for Medical Research, Tokyo, Japan (H.K.); and Tokyo Heart Center, Tokyo, Japan (H.K.).