The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Nuffield Orthopaedics Centre, Centre for Statistics in Medicine, Nuffield Department of Orthopaedics, Rheumatology, and Musculoskeletal Sciences, University of Oxford, Botnar Research Centre, Oxford, UK
University of Manchester, Medical Research Council North West Hub for Trials Methodology Research, Manchester Academic Health Science Centre, Centre for Primary Care, Manchester, UK
University of Southampton, Consultant in Public Health and Head of Health Technology Assessment, National Institute for Health Research, Evaluation, Trials, and Studies Coordinating Centre, Southampton, UK