[1] Univ Wales Hosp, Arthur Bloom Haemophilia Ctr, Cardiff, S Glam, Wales
[2] Royal Hosp Sick Children, Haemophilia Ctr, Glasgow, Lanark, Scotland
[3] Royal Free Hosp, Katharine Dormandy Haemophilia Ctr, London, England
[4] Churchill Hosp, Haemophilia Ctr, Oxford, England
[5] Great Ormond St Hosp Sick Children, Haemophilia Ctr, London, England
[6] St James Hosp, Haemophilia Ctr, Dublin, Ireland
[7] Royal London Hosp, Haemophilia Ctr, London, England
[8] Basingstoke & North Hampshire Hosp, Haemophilia Ctr, Basingstoke, Hants, England
[9] Royal Infirm Edinburgh NHS Trust, Haemophilia Ctr, Edinburgh, Midlothian, Scotland