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