1. From the Department of Internal Medicine, Seoul National University Hospital, Republic of Korea (M.-J.C., E.-K.C., S.O.); Department of Biostatistics, College of Medicine, Catholic University of Korea, Seoul, Republic of Korea (K.-D.H.); Department of Internal Medicine, Soonchunhyang University Hospital Seoul, Republic of Korea (S.-R.L.); Division of Cardiology, Department of Internal Medicine, Seoul National University Boramae Medical Center, Republic of Korea (W.-H.L.); Institute of Cardiovascular...