1. From Oxford Trauma and Emergency Care, Nuffield Department of Orthopaedics, Rheumatology, and Musculoskeletal Sciences, Kadoorie Centre (M.A.F., J.A., M.L.C.), and the Nuffield Department of Primary Care Health Sciences (M.-E.P.), University of Oxford, and patient and public representative (J.G., A.M.), Oxford, University Hospitals Coventry and Warwickshire NHS Trust (M.A.F.) and the Statistics and Epidemiology Unit, Warwick Medical School, University of Warwick (N.P.), Coventry, and the Department of...