1. Division of Hepato-Biliary-Pancreatic Surgery and Transplantation, Department of Surgery, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, South Korea
2. Department of Pathology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, South Korea
3. Department of Radiology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, South Korea