1Department of Medicine and Surgery, University of Enna 'Kore', Enna, Italy
2Gastroenterology Unit, Umberto I Hospital, Enna, Italy
3Gastroenterology and Endoscopy Unit, S. Elia Hospital, ASP di Caltanissetta, Caltanissetta, Italy
4Gastroenterology Unit, National Institute of Gastroenterology-IRCCS "Saverio de Bellis", Castellana Grotte, Bari, Italy
5Gastroenterology Unit, Buccheri La Ferla Fatebenefratelli Hospital, Palermo, Italy
6Gastroenterology and Endoscopy Unit, Fondazione Istituto San Raffaele G Giglio di Cefalù, Cefalu, Italy
7Digestive Diseases Endoscopy Unit, Policlinico G. Martino Hospital, University of Messina, Messina, Italy
8Gastroenterology and Hepatology, The University of Utah School of Medicine, Salt Lake City, United States
9Endoscopy Unit, IRCCS Humanitas Research Hospital, Rozzano, Italy
10Department of Biomedical Sciences, Humanitas University, Milan, Italy
11Gastroenterology Unit, Department of Medical Sciences, University of Foggia, Foggia, Italy
✉Correspondence Prof. Marcello Maida, MD Department of Medicine and Surgery, University of Enna 'Kore', Enna, Italy, Email: marcello.maida@unikore.it
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