1. Department of Haematology and
2. Haemostasis Research Unit, University College London, London, United Kingdom;
3. Laboratory for Thrombosis Research, Katholieke Universiteit Leuven Campus Kulak Kortrijk, Kortrijk, Belgium;
4. Department of Haematology, Guys and St Thomas National Health Service (NHS) Trust, London, United Kingdom;
5. Department of Haematology, St George's NHS Trust, London, United Kingdom;
6. Bristol Haemophilia Centre, University Hospitals Bristol Foundation Trust, Bristol, United Kingdom;
7. Department of Haematology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, United Kingdom;
8. Department of Haematology, University Hospitals of Leicester, Leicester, United Kingdom;
9. Department of Haematology, The Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, United Kingdom;
10. Roald Dahl Haemostasis and Thrombosis Centre, Royal Liverpool University Hospital, Liverpool, United Kingdom;
11. Department of Haematology, Imperial College NHS Trust, London, United Kingdom;
12. Department of Haematology, University Hospitals Coventry and Warwickshire NHS Trust, Coventry, United Kingdom;
13. Department of Haematology, Queen Alexandra Hospital, Portsmouth, United Kingdom;
14. Scottish National Blood Transfusion Service (SNBTS) Clinical Apheresis Unit, Beatson West of Scotland Cancer Centre, Glasgow, United Kingdom;
15. Department of Haematology, Aberdeen Royal Infirmary, Aberdeen, United Kingdom;
16. Department of Haematology, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, United Kingdom;
17. Department of Haematology, Great Ormond Street Hospital, London, United Kingdom;
18. Department of Haematology, Addenbrookes Hospital, Cambridge, United Kingdom;
19. SNBTS Department of Transfusion Medicine, Royal Infirmary of Edinburgh, Edinburgh, United Kingdom;
20. Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds, United Kingdom;
21. Department of Clinical Haematology, Oxford University Hospitals, Oxford, United Kingdom; and
22. National Institute for Health Research Cardiometabolic Programme, University College London (UCL) Hospitals/UCL Biomedical Research Centre, London, United Kingdom