- Correspondence to Dr Cyriel Y Ponsioen, Department of Gastroenterology and Hepatology Academic Medical Center Meibergdreef 9,1105 AZ, Amsterdam, The Netherlands ;
- Received 29 December 2016
- Revised 9 June 2017
- Accepted 15 June 2017
- Published in print 4 September 2017.
- Published online 5 September 2017.
- Published first 24 July 2017.
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