Hyuk Soon Choi, Hoon Jai Chun, Eun Sun Kim, Bora Keum, Yoon-Tae Jeen, Hong Sik Lee, Chang Duck Kim, Division of Gastroenterology and Hepatology, Department of Internal Medicine, Institute of Gastrointestinal Medical Instrument Research, Korea University College of Medicine, Korea University Medical Center, Seoul 02841, South Korea
Kyoung-Oh Kim, Department of Internal Medicine, Gachon University Gil Medical Center, Gachon University of Medicine and Science, Incheon 21565, South Korea
Author contributions: Chun HJ designed the report; Kim ES, Keum B, Jeen YT, Lee HS and Kim CD collected the patient’s clinical data; Choi HS and Kim KO analyzed the data and wrote the paper.
Supported by Korea Health Technology R&D Project through the Korea Health Industry Development Institute (KHIDI), funded by the Ministry of Health and Welfare, Republic of Korea, No. HI14C3477; and Korea University grant, No. K1523601.
Institutional review board statement: The study was approved by the institutional review board of Korea University Anam Hospital, No. AN15332-001.
Informed consent statement: This patient provided informed consent before participation.
Conflict-of-interest statement: The authors have no conflicts of interest to declare.
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: Hoon Jai Chun, MD, PhD, Division of Gastroenterology and Hepatology, Department of Internal Medicine, Institute of Gastrointestinal Medical Instrument Research, Korea University College of Medicine, Korea University Medical Center, Inchon-ro 73, Seongbuk-gu, Seoul 02841, South Korea. firstname.lastname@example.org
Telephone: +82-2-9206555 Fax: +82-2-9531943
Received: January 7, 2016
Peer-review started: February 2, 2016
First decision: March 21, 2016
Revised: April 1, 2016
Accepted: May 4, 2016
Article in press: May 4, 2016
Published online: June 21, 2016