1. Oncohaematology Division; IRCCS Ca’ Granda - Maggiore Policlinico Hospital Foundation and University of Milan; Milan Italy
2. Oncohaematology Unit of the Elderly; IRCCS Ca’ Granda - Maggiore Policlinico Hospital Foundation and University of Milan; Milan Italy
3. Gastroenterology and Endoscopy Unit; IRCCS Ca’ Granda - Maggiore Policlinico Hospital Foundation; University of Milan; Milan Italy
4. Haematopathology Service; Division of Pathology; Department of Pathophysiology and Transplantation; University of Milan and IRCCS Ca’ Granda - Maggiore Policlinico Hospital Foundation; Milan Italy
5. Epidemiology Unit; Department of Preventive Medicine; IRCCS Ca’ Granda - Maggiore Policlinico Hospital Foundation and University of Milan; Milan Italy
6. Division of Pathology; Department of Pathophysiology and Transplantation; University of Milan and IRCCS Ca’ Granda - Maggiore Policlinico Hospital Foundation; Milan Italy
7. Gastroenterology and Liver Unit; IRCCS Ca’ Granda - Maggiore Policlinico Hospital Foundation; University of Milan; Milan Italy