1. Angelo Bianchi Bonomi Hemophilia and Thrombosis Center and Institute of Internal Medicine, IRCCS Maggiore Hospital and University of Milan, Italy
2. Department of Medicine, Beth Israel Hospital and Harvard Medical School Boston, MA, USA
3. Transfusion Center, Castelfranco, Veneto, Italy
4. Hematology Division, Ca Granda Hospital, Milan, Italy
5. Charles A. Dana Research Institute and the Harward-Thorndike Laboratory, Boston, MA, USA