1. NIHR Blood and Transplant Research Unit in Data Driven Transfusion Practice, Radcliffe Department of Medicine University of Oxford Oxford UK
2. Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital Oxford UK
3. NHS Blood and Transplant John Radcliffe Hospital Oxford UK
4. Leeds Institute of Health Sciences University of Leeds Leeds UK
5. Centre for Statistics in Medicine Botnar Research Centre Oxford UK
6. Blizard Institute Queen Mary University of London London UK
7. Barts Health NHS Trust London UK
8. NHS Blood and Transplant London UK
9. Leeds Teaching Hospitals Leeds UK
10. University College London Hospitals NHS Foundation Trust London UK
11. Nuffield Orthopaedic Centre Oxford University NHS Foundation Trust Oxford UK
12. Guy's and St Thomas' NHS Foundation Trust London UK
13. Nuffield Department of Clinical Neurosciences University of Oxford Oxford UK
14. Queen Mary University of London London UK
15. University College London London UK
16. Cambridge University Hospitals NHS Foundation Trust Cambridge UK