1. Oxford Trauma and Emergency Care, Nuffield Department of Orthopaedics, Rheumatology & Musculoskeletal Sciences, University of Oxford, Oxford, UK
2. Oxford Clinical Trials Research Unit, Centre for Statistics in Medicine, Nuffield Department of Orthopaedics, Rheumatology & Musculoskeletal Sciences, University of Oxford, Oxford, UK
3. Warwick Clinical Trials Unit, Warwick University, Coventry, UK
4. South Tees Hospitals NHS Foundation Trust, The James Cook University Hospital, Middlesbrough, UK
5. Ontario Medical Association, Toronto, Canada
6. Starship Child Health, Grafton, New Zealand
7. University of Liverpool, Institute of Translational Medicine, Institute in the Park, Alder Hey Children’s NHS Foundation Trust, Liverpool, UK
8. Alder Hey Children’s Hospital, Liverpool, UK
9. Meols, Merseyside, UK