1. From the Department of Internal Medicine and Cardiovascular Center, Seoul National University Hospital, Republic of Korea (T.-M.R., K.W.P., H.-J.K., B.-K.K., H.-S.K.); Heart Vascular Stroke Institute, Samsung Medical Center, Seoul, Republic of Korea (J.M.L.); Division of Cardiology, UCLA Medical Center, Los Angeles, CA (M.S.L.); Sejong Heart Institute, Sejong General Hospital, Bucheon, Republic of Korea (K.-H.J.); Department of Internal Medicine, Presbyterian Medical Center, Jeonju, Republic of...