1. Oxford Trauma, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences (NDORMS), Kadoorie Centre, University of Oxford, Oxford, UK.
2. Oxford University Hospitals NHS Foundation Trust, Trauma Research, Kadoorie Centre, John Radcliffe Hospital, Oxford, UK.
3. Faculty of Medicine, University of New South Wales, Sydney, Australia.