1. Patients' Clinical Team; NHS Blood and Transplant; Newcastle upon Tyne
2. National Comparative Audit of Blood Transfusion; NHS Blood and Transplant; Newcastle upon Tyne
3. Statistics and Clinical Studies; NHS Blood and Transplant; Newcastle upon Tyne
4. Transfusion Department; University Hospital of Leicester; Leicester, UK
5. Department of Haematology; Newcastle upon Tyne Hospitals NHS Foundation Trust; Newcastle upon Tyne UK