1. From the Division of Cardiology (C.-T.T., S.-A.C., C.-E.C., Z.-C.W., C.-W.C., K.-C.U, Y.-J.C., W.-C.Y., M.-S.C.), Department of Medicine, School of Medicine, National Yang-Ming University, and the Veterans General Hospital-Taipei, Taipei, and Shin-Kong Memorial Hospital (S.-H.L.) and Veterans General Hospital-Taichung (J.-L.H.), Taiwan, ROC.