- Correspondence to Professor P Emery, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, and NIHR Leeds Musculoskeletal Biomedical Research Unit, Leeds Teaching Hospitals NHS Trust, Leeds LS7 4SA, UK;
- Received November 7, 2013
- Revised February 11, 2014
- Accepted February 16, 2014
- First published March 11, 2014.
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