Craig Richard, Holt Tim, Rees Jonathan Lloyd
Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Botnar Research Centre, Oxford OX3 7LD, UK.
Department of Primary Care Health Sciences, University of Oxford, Oxford OX1 2ET, UK.
BMJ. 2017 Dec 11;359:j5366. doi: 10.1136/bmj.j5366.