1. Department of Pathophysiology and Transplantation Università degli Studi di MilanoMilan Italy
2. Angelo Bianchi Bonomi Hemophilia and Thrombosis Center Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, and Luigi Villa Foudation Milan Italy
3. Department of Clinical Epidemiology Leiden University Medical Center Leiden the Netherlands