[1] Univ Milan, Maggiore Hosp, IRCCS, Div Hepatol, I-20122 Milan, Italy
[2] Univ Milan, Maggiore Hosp, IRCCS, Dept Gastroenterol, I-20122 Milan, Italy
[3] Univ Milan, Maggiore Hosp, IRCCS, Dept Internal Med, I-20122 Milan, Italy
[4] Univ Milan, Maggiore Hosp, IRCCS, Angelo Bianchi Bonomi Hemophilia & Thrombosis Ctr, I-20122 Milan, Italy
[5] San Giovanni Bosco Hosp, Dept Hematol, Naples, Italy
[6] San Giovanni Bosco Hosp, Hemophilia Ctr, Naples, Italy
[7] Careggi Hosp, Dept Hematol, Florence, Italy
[8] Careggi Hosp, Hemophilia Ctr, Florence, Italy