1. Department of Surgery; Seoul National University College of Medicine; Seoul South Korea
2. Transplantation Center; Seoul National University Hospital; Seoul South Korea
3. Division of Hepatobiliary Surgery and Liver Transplantation, Department of Surgery; University of Ulsan College of Medicine; Seoul South Korea
4. Department of Surgery; Samsung Medical Center, Sungkyunkwan University School of Medicine; Seoul South Korea
5. Department of Surgery and The Research Institute for Transplantation; Yonsei University College of Medicine; Seoul South Korea