1. School of Cellular and Molecular Medicine; University of Bristol; Bristol UK
2. Bradford Haemophilia Centre; Bradford Royal Infirmary; Bradford UK
3. Arthur Bloom Haemophilia Centre; University Hospital of Wales; Cardiff UK
4. The Royal London Haemophilia Centre; The Royal London Hospital; London UK
5. Katharine Dormandy Haemophilia Centre and Thrombosis Unit; Royal Free Hospital; London UK
6. Manchester Haemophilia Comprehensive Care Centre; Royal Manchester Children's Hospital; Manchester UK
7. Bournemouth and Poole Haemophilia Centre; Royal Bournemouth Hospital; Dorset UK
8. Great Ormond Street Haemophilia Comprehensive Care Centre; Great Ormond Street Hospital; London UK
9. The National Centre for Hereditary Coagulation Disorders; St James' Hospital; Dublin Ireland