[1] Pusan National University College of Medicine,Division of Hepatobiliary and Pancreas Surgery, Department of Surgery, Biomedical Research Institute
[2] Seoul Medical Center,Department of Surgery
[3] Pusan National University College of Medicine,Division of Gastroenterology, Department of Surgery
[4] Pusan National University College of Medicine,Department of Neurosurgery
[5] Kosin University College of Medicine,Division of Hepatology, Department of Internal Medicine
[6] Inje University,Department of Surgery, College of Medicine
[7] Busan Paik Hospital,Division of Hepatobiliary Pancreas and Transplant Surgery, Department of Surgery
[8] Pusan National University,Division of Medical Mathematics
[9] National Institutes for Mathematical Sciences,undefined