Ki Bum Park1, Chul Hyo Jeon2, Ho Seok Seo2, Yoon Ju Jung2, Kyo Young Song2, Cho Hyun Park2, Han Hong Lee2
1Department of Surgery, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Gyeonggi-do, South Korea
2Department of Surgery, Seoul St Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea