- Correspondence to Dr Alex Ford, Leeds Gastroenterology Institute, Room 125, 4th Floor, Bexley Wing, St. James's University Hospital, Beckett Street, Leeds LS9 7TF, UK;
- Received December 15, 2016
- Revised January 26, 2017
- Accepted January 27, 2017
- First published February 23, 2017.
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