1. Fondazione IRCCS Cà Granda - Ospedale Maggiore Policlinico, Department of Pathophysiology and Transplantation, Università degli Studi di Milano; Gastroenterology and Endoscopy Unit; Via F. Sforza, 35 Milan Italy 20122
2. Clinical Hospital Centre Rijeka; Department of Radiology; Kresimirova 42 Rijeka Croatia 51000
3. Heart of England NHS Foundation Trust, Birmingham Heartlands Hospital; Directorate of Surgery, Department of Gastroenterology; Bordesley Green East Birmingham UK B9 5SS
4. A Manzoni Hospital ASST Lecco; Department of Internal Medicine; Via dell'Eremo, 9/11 Lecco Italy 23900
5. Clinical Hospital Centre Rijeka; Department of Gastroenterology; Kresimirova 42 Rijeka Croatia 51000
6. Università degli Studi di Milano; Dipartimento di Scienze Biomediche e Cliniche "L. Sacco"; via GB Grassi 74 Milan Italy 20157