1. Department of Transfusion Medicine and Haematology; Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico; Milan Italy
2. Gastroenterology and Endoscopy Unit; Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico; Milan Italy
3. Department of Transfusion Medicine and Haematology; Ospedale Alessandro Manzoni; Lecco Italy
4. Department of Clinical Sciences and Community Health; Università degli Studi di Milano; Milan Italy
5. Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico; Milan Italy