1. From the Department of Internal Medicine and Liver Research Institute (M.K.P., Y.B.L., S.J.Y., Y.J.K., J.H.Y., J.H.L.), Department of Radiology (D.H.L.), and Department of Anesthesiology (H.C.L.), Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul 03080, Korea; and Department of Radiology, Seoul National University Hospital Healthcare System Gangnam Center, Seoul, Korea (B.Y.H.).