1. Centre for Haematology, Department of Immunology and Inflammation Imperial College London London UK
2. Department of Haematology Imperial College Healthcare NHS Trust London UK
3. Department of Haematology Manchester Royal Infirmary Manchester UK
4. Department of Haematology Edinburgh Royal Infirmary Edinburgh Scotland
5. Oxford Haemophilia and Thrombosis Centre Oxford University Hospitals NHS Trust Oxford UK
6. Bristol NHS Blood and Transplant Centre Bristol UK
7. Department of Haematology Royal Hallamshire Hospital Sheffield UK