1. Department of Trauma & Orthopaedics, University Hospitals Coventry and Warwickshire NHS Trust, Coventry
2. Warwick Clinical Trials Unit, Warwick Medical School, Coventry
3. St George’s University Hospital NHS Foundation Trust, St George’s University of London, London, UK
4. Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK