1. University Hospital Southampton NHS Foundation Trust; Shackleton Department of Anaesthesia; Tremona Road Southampton Hampshire UK So16 6YD
2. Oxford University Hospitals NHS Foundation Trust and University of Oxford; National Institute for Health Research (NIHR) Oxford Biomedical Research Centre; John Radcliffe Hospital, Headley Way Headington Oxford UK OX3 9BQ
3. NHS Blood and Transplant; Systematic Review Initiative; John Radcliffe Hospital Oxford UK OX3 9BQ
4. 5639 Gowland Rd. Sechelt BC Canada V0N 3A8
5. University of Oxford; Centre for Statistics in Medicine; Botnar Research Centre Windmill Road Oxford UK OX3 7LD
6. University of Oxford; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences (NDORMS); Botnar Research Centre, Windmill Road Oxford Oxfordshire UK OX3 7LD
7. Southampton University NHS Hospital; Paediatric and Adult Cardiothoracic Anaesthesia; Tremona Road Southampton UK SO16 6YD
8. NHS Blood and Transplant; Haematology/Transfusion Medicine; Level 2, John Radcliffe Hospital Headington Oxford UK OX3 9BQ