Jae Hyun Han, Young Kyoung You, Ho Joong Choi, Tae Ho Hong, Dong Goo Kim
Jae Hyun Han, Young Kyoung You, Ho Joong Choi, Tae Ho Hong, Dong Goo Kim, Division of Hepatobiliary-Pancreas Surgery and Liver Transplantation, Department of Surgery, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, South Korea
Author contributions: Han JH collected and analyzed the data, and drafted the manuscript; You YK designed and supervised the study; Choi HJ, Hong TH and Kim DG offered the technical and statistical support; all authors have read and approved the final version to be published.
Institutional review board statement: This study was reviewed and approved by the Catholic University Seoul St. Mary’s Hospital Institutional Review Board.
Informed consent statement: Informed consent is exempted in the case of retrospective study in our institution.
Conflict-of-interest statement: There are no conflicts of interest to be disclosed.
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: Young Kyoung You, MD, PhD, Division of Hepatobiliary-Pancreas Surgery and Liver Transplantation, Department of Surgery, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul 06591, South Korea. yky602@catholic.ac.kr
Telephone: +82-2-22586102 Fax: +82-2-595-2992
Received: October 10, 2017
Peer-review started: October 10, 2017
First decision: October 30, 2017
Revised: November 9, 2017
Accepted: November 27, 2017
Article in press: November 27, 2017
Published online: January 21, 2018