1. Department of Radiology; Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine; Seoul Korea
2. Department of Radiology and the Research Institute of Radiology; University of Ulsan College of Medicine, Asan Medical Center; Seoul Korea
3. Department of Radiology; Dongguk University Ilsan Medical Center; Goyang-si Gyeonggi-do Korea
4. School of Computer Science and Engineering; Soongsil University; Seoul Korea
5. Division of Liver Transplantation and Hepatobiliary Surgery; and Departments of Surgery, University of Ulsan College of Medicine, Asan Medical Center; Seoul Korea