1. Child Health Evaluative Sciences, Research Institute, Division of Haematology/Oncology, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, ON Canada;
2. Department of Laboratory and Pharmacy, University Hospital Utrecht, Utrecht, the Netherlands;
3. Lund University, Departments of Paediatrics and Mälmo Centre for Thrombosis and Haemostasis, Skåne University Hospital, Sweden; and
4. Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca’ Granda, Ospedale Maggiore Policlinico, Milan, Italy