If you have any questions about the study, please email white8-copal@ndorms.ox.ac.uk. 

This study is managed by the Oxford Trauma trial team, a part of the Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences (NDORMS) at the University of Oxford. Our unit is based in the Kadoorie Centre, at the John Radcliffe Hospital.