1. Scottish National Blood Transfusion Service Dundee UK
2. Wolfson Institute of Population Health Queen Mary University of London London UK
3. University Hospital of Wales Cardiff UK
4. Leeds Teaching Hospitals NHS Trust Leeds UK
5. St Mary's Surgery Bath UK
6. NHS Blood and Transplant and Serious Hazards of Transfusion Manchester UK
7. University College London London UK
8. Dudley Group of Hospitals NHS Trust Dudley UK
9. NHS Blood and Transplant London UK
10. Belfast Trust Belfast UK