1 Gastroenterology Unit, Department of Biomedical and Clinical Sciences, “L.Sacco” Hospital, University of Milan, Milan, Italy;
2 Radiology Unit, Fatebenefratelli “L.Sacco” University Hospital, Milan, Italy
3 Clinical Epidemiology and Biometeric Unit, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
4 Gastroenterology. Hepatology, & Digestive Endoscopy Section, Department of Medicine and Surgery, University of Perugia, Perugia, Italy;
5 Gastroenterology Unit, Santa Maria della Misericordia Hospital, Perugia, Italy
*Address correspondence to: Prof. Giovanni Maconi; Gastroenterology Unit, Department of Biomedical and Clinical Sciences, L. Sacco University Hospital, Milan, Italy; Tel. 02 39044249, Email: [email protected]
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