1. University of Oxford; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences (NDORMS); Kadoorie Centre John Radcliffe Hospital, Headley Way Oxford UK OX3 9DU
2. The James Cook University Hospital; Department of Trauma and Orthopaedics; Marton Road Middlesbrough UK TS4 3BW
3. Peterborough and Stamford Hospitals NHS Foundation Trust; Department of Orthopaedics; Peterborough City Hospital CBU PO Box 211, Bretton Gate Peterborough Cambridgeshire UK PE3 9GZ
4. York Health Economics Consortium; Market Square University of York, Heslington York UK YO10 5NH