- Correspondence to Dr Siba Prosad Paul, Department of Paediatric Gastroenterology, Bristol Royal Hospital for Children, Bristol BS2 8BJ, UK;
- Received 20 September 2016
- Revised 27 March 2017
- Accepted 30 March 2017
- Published in print 1 October 2017.
- Published online 20 September 2017.
- Published first 8 May 2017.
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