[1] UNIV MILAN,IRCCS,MAGGIORE HOSP,A BIANCHI BONOMI HEMOPHILIA & THROMBOSIS CTR,I-20122 MILAN,ITALY
[2] UNIV MILAN,IRCCS,MAGGIORE HOSP,INST INTERNAL MED,I-20122 MILAN,ITALY
[3] UNIV GENOA,DEPT INTERNAL MED,I-16126 GENOA,ITALY
[4] UNIV MODENA,DEPT BIOMED SCI,MODENA,ITALY