Affiliation: | 1. Department of Gastroenterology, Asan Liver Center, Asan Medical Center, University of Ulsan College of Medicine, 388-1 Poongnap-2dong, Songpa-gu, Seoul 138-736, Republic of Korea;2. Department of Radiology, Asan Liver Center, Asan Medical Center, University of Ulsan College of Medicine, 388-1 Poongnap-2dong, Songpa-gu, Seoul 138-736, Republic of Korea;3. Department of Applied Statistics, Gachon University, Gyeonggi-do, Republic of Korea |