Division of Gastroenterology, Department of Internal Medicine, Inha University School of Medicine, Incheon, Korea.
© Copyright 2016. Korean Association for the Study of Intestinal Diseases. All rights reserved.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Financial support: This study was supported by the Inha University research fund.
Conflict of interest: None.
