Surgical outcomes of Korean ulcerative colitis patients with and without colitis-associated cancer
Yong Sik Yoon, Chang Sik Yu, Department of Colon and Rectal Surgery, University of Ulsan College of Medicine and Asan Medical Center, Seoul 138-736, South Korea
Yong Beom Cho, Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 135-710, South Korea
Kyu Joo Park, Seung-Bum Ryoo, Department of Surgery, Seoul National University College of Medicine, Seoul 110-744, South Korea
Seung Hyuk Baik, Department of Surgery, Yonsei University College of Medicine, Severance Hospital, Seoul 135-720, South Korea
Sang Nam Yoon, Department of Surgery, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul 150-950, South Korea
Kil Yeon Lee, Department of Surgery, Kyung Hee University School of Medicine, Seoul 130-872, South Korea
Hungdai Kim, Department of Surgery, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul 110-746, South Korea
Ryung-Ah Lee, Department of Surgery, Ewha Womans University School of Medicine, Seoul 158-710, South Korea
Author contributions: Yu CS, Park KJ and Yoon YS designed the research; Cho YB, Park KJ, Baik SH, Yoon SN, Ryoo SB, Lee KY, Kim H and Lee RA contributed to data collection; and Yoon YS and Yu CS analyzed the data and wrote the paper.
Ethics approval: The study was reviewed and approved by the Institutional Review Board of Asan Medical Center (IRB No. 2013-0683).
Informed consent: Because this was a retrospective study with minimal risk to patients, it was exempted from obtaining informed consent by the IRB.
Conflict-of-interest: No conflict.
Data sharing: No additional data are available.
Open-Access: This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/
Correspondence to: Chang Sik Yu, MD, Department of Colon and Rectal Surgery, University of Ulsan College of Medicine and Asan Medical Center, 86 Asanbyeongwon-gil, Songpa-gu, Seoul 138-736, South Korea. firstname.lastname@example.org
Telephone: +82-230-103494 Fax: +82-230-106701
Received: October 29, 2014
Peer-review started: October 29, 2014
First decision: November 26, 2014
Revised: December 17, 2014
Accepted: January 30, 2015
Article in press: January 30, 2015
Published online: March 28, 2015