1. Department of Haematological Medicine, King’s College Hospital, London, United Kingdom;
2. Department of Haematology, School of Cancer and Pharmaceutical Sciences, Faculty of Life Sciences and Medicine, King’s College London, London, United Kingdom;
3. Transfusion Medicine, NHS Blood and Transplant (NHSBT), Oxford, United Kingdom;
4. Department of Haematology, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom;
5. Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom;
6. NIHR Oxford Biomedical Research Centre, Oxford, United Kingdom;
7. NHSBT Clinical Trials Unit, Cambridge, United Kingdom;
8. NHSBT Clinical Trials Unit, Bristol, United Kingdom;
9. Haematology, Barts and The London Hospital, London, United Kingdom;
10. H&I Laboratory, NHSBT, Colindale, United Kingdom;
11. MRC Clinical Trials Unit, University College London, London, United Kingdom;
12. Histocompatibility and Immunogenetics (H&I) Laboratory, NHSBT, Tooting, United Kingdom; and
13. Faculty of Life Sciences and Medicine, King’s College London, University of London, London, United Kingdom