1. Department of Medical and Surgical Sciences; University of Bologna; Bologna Italy
2. Department of Emergency and Organ Transplantation; University of Bari; Bari Italy
3. Department of Precision Medicine; University of Campania “Luigi Vanvitelli”; Naples Italy
4. Department of Gastroenterology and Digestive Endoscopy; National Institute of Gastroenterology; IRCCS “Saverio De Bellis”; Castellana Grotte (Bari) Italy
5. Gastroenterology and Digestive Endoscopy Unit; Ospedale Civile Sant' Agostino-Estense; Azienda Ospedaliero-Universitaria; Modena Italy
6. Section of Gastroenterology - Department of Surgery, Oncology and Gastroenterology; University of Padua; Padua Italy
7. Gastroenterology Unit; Department of Biomedical and Clinical Sciences; University Hospital “L. Sacco”; Milan Italy