- Correspondence to Dr Joanna Robson, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Science (NDORMs), University of Oxford; Rheumatology Department, Nuffield Orthopaedic Centre, Windmill Road, Oxford, OX3 7LD, UK.
- Received May 10, 2013
- Revised August 27, 2013
- Accepted October 29, 2013
- First published November 15, 2013.
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