1. Department of Internal Medicine, Pusan National University School of Medicine, Liver center, Pusan National University Yangsan Hospital, Yangsan, Korea
2. Department of Surgery, Pusan National University School of Medicine, Division of Hepato-Biliary-Pancreatic Surgery and Transplantation, Pusan National University Yangsan Hospital, Yangsan, Korea
3. Department of Pharmacology, Pusan National University School of Medicine, Yangsan, Korea