1. Angelo Bianchi Bonomi Hemophilia and Thrombosis Center; Department of Clinical Sciences and Community Health; Università degli Studi di, Milano
2. IRCCS Cà Granda Ospedale Maggiore Foundation; Milano Italy
3. First Division of Gastroenterology; IRCCS Cà Granda Ospedale Maggiore Foundation; Milano Italy
4. Center of Transfusion Medicine; IRCCS Cà Granda Ospedale Maggiore Foundation; Milano Italy
5. Scientific direction; IRCCS Cà Granda Ospedale Maggiore Foundation; Milano Italy