[1] City Hosp, Transfus & Hemophilia Ctr, Verona, Italy
[2] Univ Milan, Angelo Bianchi Bonomi Hemophilia, IRCCS Maggiore Hosp, Milan, Italy
[3] Univ Milan, Thrombosis Ctr, IRCCS Maggiore Hosp, Milan, Italy
[4] Univ Milan, Dept Med & Med Specialties, IRCCS Maggiore Hosp, Milan, Italy