- Correspondence to Professor Young-Suk Lim, Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Songpa-gu, Seoul 138-736, Korea;
- Received 22 July 2017
- Revised 5 September 2017
- Accepted 26 September 2017
- Published online 9 November 2017.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.