1. Department of Transfusion Medicine and Haematology; Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico; Milano Italy
2. Department of Radiology; Clinical Hospital Centre Rijeka; Rijeka Croatia
3. Department of Radiology ; Clinical Hospital Centre Rijeka; Rijeka Croatia
4. Department of Gastroenterology; Heart of England NHS Foundation Trust; Birmingham UK
5. Gastroenterology and Endoscopy Unit; Fondazione IRCCS Ca´ Granda - Ospedale Maggiore Policlinico, Department of Pathophysiology and Transplantation, Università degli Studi di Milano; Milan Italy
6. Department of Gastroenterology; Clinical Hospital Centre Rijeka; Rijeka Croatia
7. Dipartimento di Scienze Biomediche e Cliniche "L. Sacco"; Università degli Studi di Milano; Milan Italy