¹Division of Hepato-Biliary & Pancreas Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Center,
²Department of Surgery, Seoul National University Hospital, Seoul,
³Department of Surgery, Kyungpook National University Medical Center, Daegu,
⁴Department of Surgery, Kosin University Gospel Hospital, Busan,
⁵Department of Surgery, The Catholic University of Korea College of Medicine, Yeouido St. Mary's Hospital, Seoul,
⁶Department of Surgery, Chonnam National University Hwasun Hospital, Gwangju,
⁷Department of Surgery, Ajou University Hospital, Suwon, Korea

Received: 14 December 1901   • Revised: 14 December 1901   • Accepted: 14 December 1901