Affiliation: | 1. Kent Haemophilia Centre, East Kent Hospitals NHS Trust Canterbury, Canterbury, UK;2. Haemophilia Centre, Royal London Hospital, Barts Health NHS Trust, London, UK;3. Haemophilia Centre, St Thomas’ Hospital, Guys & St Thomas’ NHS Trust, London, UK;4. Bristol Haemophilia Centre, Bristol Children's Hospital, University Hospitals Bristol NHS Trust, Bristol, UK;5. Oxford Haemophilia Centre, Churchill Hospital, Oxford University Hospitals NHS Trust, Oxford, UK;6. Basingstoke Haemophilia Centre, Hampshire Hospitals NHS Foundation Trust, Basingstoke, UK |