1. York Trials Unit, Department of Health Sciences, University of York, York, UK
2. Department of Trauma & Orthopaedic Surgery, The James Cook University Hospital, Middlesbrough, UK
3. Leicester General Hospital, University Hospitals of Leicester NHS Trust, Leicester, UK
4. College of Medicine and Health, University of Exeter, Exeter, UK
5. Centre for Reviews and Dissemination, University of York, York, UK
6. Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK