- Correspondence to Professor G Cammarota, Gastroenterological Area, Fondazione Policlinico Universitario Gemelli, Università Cattolica del Sacro Cuore, Largo A. Gemelli 8, Rome 00168, Italy;
- Received September 7, 2016
- Revised December 1, 2016
- Accepted December 4, 2016
- First published January 13, 2017.
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