1. PedNet Foundation, Baarn, The Netherlands
2. Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Ospedale Maggiore Policlinico, Fondazione IRCCS Ca' Granda, Milan, Italy
3. Department of Paediatrics and Adolescent Medicine, University Hospital Frankfurt, Frankfurt, Germany
4. Centre de Référence pour le Traitement des Maladies Hémorragiques, Hôpital Bicêtre, Paris, France
5. Haemophilia Centre, Haemostasis Unit, “Aghia Sophia” Children's Hospital, Athens, Greece
6. Division of Pediatric and Adolescent Medicine, Department of Clinical Medicine, Aarhus University Hospital, Aarhus, Denmark
7. Haematology Department, Birmingham Women's and Children's Hospital, Birmingham, United Kingdom
8. Our Lady's Children's Hospital Crumlin, Dublin, Ireland