- Correspondence to Dr Jan J Koornstra, Department of Gastroenterology and Hepatology, University Medical Center Groningen, University of Groningen, P.O. box 30001, Groningen 9700 RB, The Netherlands;
- Received April 10, 2014
- Revised July 31, 2014
- Accepted August 20, 2014
- First published September 10, 2014.
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.