- Correspondence to Dr J Antonio Aviña-Zubieta, Arthritis Research Centre of Canada, University of British Columbia/Division of Rheumatology, 5591 No. 3 Road, Richmond, BC V6X 2C7, Canada;
- Received April 1, 2014
- Revised August 22, 2014
- Accepted September 13, 2014
- First published September 29, 2014.
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