- Correspondence to Professor Paul Emery, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Chapel Allerton Hospital, Chapeltown Road, Leeds LS7 4SA, UK;
- Received April 3, 2017
- Revised July 12, 2017
- Accepted July 18, 2017
- First published August 9, 2017.
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