1. Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
2. Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
3. Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea
4. Department of Surgery, Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
5. Department of Surgery, College of Medicine, The Catholic University of Korea, Seoul, South Korea
6. Department of Surgery, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Pusan, South Korea
7. Department of Liver Transplantation and Hepatobiliary Surgery, Ajou University School of Medicine, Suwon, South Korea
8. Department of Surgery, Catholic University of Daegu, Daegu, South Korea
9. Department of Surgery, Korea University College of Medicine, Seoul, South Korea
10. Department of Surgery, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, South Korea