1. Centre for Outcomes and Experience Research in Children’s Health Illness and Disability (ORCHID), NIHR Biomedical Research Centre Great Ormond Street Hospital for Children, London, UK
2. Haemnet, London, UK
3. Paediatric Haemophilia Comprehensive Care Centre, Royal Hospital for Sick Children, Glasgow, UK
4. Leeds Haemophilia Centre, St James’ University Hospital, Leeds, UK
5. Costello Medical, Cambridge, UK
6. Roche Products Ltd., Welwyn Garden City, UK
7. Katharine Dormandy Haemophilia and Thrombosis Centre, Royal Free Hospital, Pond Street, London, NW3 2QG, UK