1 Bart's Health NHS Trust, London, United Kingdom.
2 Thrombosis and Haemophilia Centre, Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom.
3 Clinical Haematology, Nottingham University Hospitals NHS Trust, Nottingham, United Kingdom.
4 Haematology, West Suffolk NHS Foundation Trust, Bury St Edmunds, United Kingdom.
5 Department of Haematology, Newcastle upon Tyne, United Kingdom.
6 Department of Immunobiology, Barts and The London School of Medicine and Dentistry, Blizard Institute, Queen Mary University of London, United Kingdom.
7 Comprehensive Care Haemophilia Centre, University Hospitals Birmingham NHS Foundation Trust, Birmingham, United Kingdom.
8 Department of Haematology, Liverpool University Hospitals NHS Foundation Trust and University of Liverpool, United Kingdom.
9 Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, United Kingdom.