- Correspondence to Dr Vijay Pattni, Department of Gastroenterology, Southmead Hospital, North Bristol NHS Trust, Bristol, BS10 5NB, UK;
- Received 29 March 2017
- Revised 20 June 2017
- Accepted 3 July 2017
- Published in print 14 August 2017.
- Published online 16 August 2017.
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