1. Warwick Clinical Trials Unit, Warwick Medical School, University of Warwick, Coventry, United Kingdom2Department of Trauma and Orthopaedic Surgery, University Hospitals Coventry and Warwickshire NHS Trust, Coventry, United Kingdom3Oxford Trauma, Nuffield Department of Orthopaedics, Rheumatology, and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
2. Warwick Clinical Trials Unit, Warwick Medical School, University of Warwick, Coventry, United Kingdom3Oxford Trauma, Nuffield Department of Orthopaedics, Rheumatology, and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
3. Warwick Clinical Trials Unit, Warwick Medical School, University of Warwick, Coventry, United Kingdom
4. Swansea University Medical School, Swansea, Wales, United Kingdom
5. Statistics and Epidemiology Unit, University of Warwick Medical School, Coventry, United Kingdom