1. Paul‐Ehrlich‐Institut Langen Germany
2. INSERM, Institut Pierre Louis d'Épidémiologie et de Santé publique Sorbonne Universités Paris France
3. Service d'Hématologie Oncologie Pédiatrique, La Timone APHM and Aix Marseille Université Marseille France
4. The University Department of Haematology University Hospital of Wales Hospital Cardiff UK
5. Santé publique France French National Public Health Agency Saint‐Maurice France
6. Barts and The London School of Medicine & Dentistry, The Royal London Hospital Haemophilia Centre QMUL London UK
7. Department of Haematology, Manchester Royal Infirmary Manchester University Manchester UK
8. Service d'Hématologie et de Transfusion, Faculté de Médecine, Centre Hospitalier Universitaire de Lille Université Lille 2 Lille France
9. Department of Clinical Sciences–Paediatrics Lund University Lund Sweden
10. The United Kingdom National Haemophilia Database Manchester UK
11. Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico Milan Italy
12. PedNet Haemophilia Research Foundation Baarn The Netherlands