1. From the Division of Cardiology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea (J.K.H., Seung Hwa Lee, Y.B.S., M.J.J., T.K.P., S.-H.C., J.H.Y., J.-H.C., Sang Hoon Lee, H.-C.G., J.-Y.H.); Biostatistics and Clinical Epidemiology Center, Research Institute for Future Medicine, Samsung Medical Center, Seoul, Republic of Korea (J.A., K.C.); and Department of Mathematical and Statistical Sciences, University of Alberta, Edmonton,...