1. Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Department of Medicine and Medical Specialties, University of Milan and Instituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Maggiore Hospital, Mangiagalli and Regina Elena Foundation, Milan; and
2. Immunohematology and Transfusion Centre, Department of Pathology and Laboratory Medicine, University Hospital of Parma, Parma, Italy