- Correspondence to Prof Antonio Craxi, Section of Gastroenterology and8 Hepatology, Di.Bi.M.I.S., University of Palermo, Italy, Piazza delle Cliniche, 2, 90127 Palermo,Italy;
- Received 13 June 2017
- Accepted 15 June 2017
- Published online 13 July 2017.
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