- Correspondence to Professor David Walsh, Arthritis Research UK Pain Centre, Department of Academic Rheumatology, University of Nottingham, City Hospital, Clinical Sciences Building, Hucknall Road, Nottingham NG5 1PB, UK,
- Received February 6, 2013
- Revised May 15, 2013
- Accepted June 29, 2013
- First published July 13, 2013.
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