Department of Internal Medicine, Kosin University College of Medicine, Busan, Korea
© Copyright 2019. 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
The author received no financial support for the research, authorship, and/or publication of this article.
CONFLICT OF INTEREST
No potential conflict of interest relevant to this article was reported.
AUTHOR CONTRIBUTION
Writing and approval of final manuscript: Kim JH.