1. Department of Haematology, University College London Hospital, London, United Kingdom;
2. Centre for Haemostasis and Thrombosis, St. Thomas’ Hospital, London, United Kingdom;
3. National Health Service (NHS) Blood and Transplant Therapeutic Apheresis Services and Oxford University Hospitals Foundation Trust, Oxford, United Kingdom;
4. Comprehensive Care Haemophilia Centre, University Hospitals Birmingham NHS Foundation Trust, Birmingham, United Kingdom;
5. Roald Dahl Haemostasis and Thrombosis Centre, Royal Liverpool University Hospital, Liverpool, United Kingdom; and
6. Leeds Teaching Hospitals NHS Trust, Leeds, United Kingdom