Affiliation: | 1. Division of Gastrointestinal Surgery, Department of Surgery, College of Medicine, The Catholic University of Korea, Seoul, Korea 2. Department of Surgery, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, 665-8 Bupyeong 6-dong, Bupyeong-gu, Incheon, 403-720, Korea
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