1. Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
2. National Institute for Health Research Biomedical Research Centre Haematology Theme, Oxford, United Kingdom
3. Adult Intensive Care Unit, Oxford University Hospitals National Health Service (NHS) Foundation Trust, Oxford, United Kingdom
4. Department of Anaesthesia, Royal Berkshire Hospitals NHS Foundation Trust, Reading, United Kingdom
5. National Institute for Health Research Biomedical Research Centre in Gastrointestinal and Liver Diseases, Nottingham University Hospitals NHS Trust, Nottingham, United Kingdom.
6. Department of Colorectal Surgery, Nottingham University Hospitals NHS Trust, University of Nottingham, Nottingham, United Kingdom.
7. Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
8. Systematic Review Initiative, NHS Blood & Transplant, Oxford, United Kingdom
9. Department of Anaesthesia, Brighton and Sussex University Hospitals NHS Trust, Brighton, United Kingdom
10. Intensive Care Unit, Fiona Stanley Hospital, Perth, Australia
11. Department of Haematology, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom