- Correspondence to Dr Torsten Beyna, Department of Gastroenterology, Evangelisches Krankenhaus Dusseldorf, Dusseldorf 40217, Germany;
- Received September 20, 2019
- Revised March 26, 2020
- Accepted April 4, 2020
- First published April 24, 2020.
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.