1. From the Department of Cardiology, CHA Bundang Medical Center, CHA University, Seongnam, Korea (S.H.K.); and Department of Cardiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea (J.-M.A., C.H.L., P.H.L., S.-J.K., S.-W.L., Y.-H.K., C.W.L., S.-W.P., D.-W.P., S.-J.P.).