- Correspondence to Maureen Dubreuil, Instructor of Medicine, Section of Rheumatology and the Clinical Epidemiology Unit, Boston University School of Medicine, 650 Albany Street Suite 200, Boston, MA 02118, USA;
- Received January 21, 2014
- Revised February 21, 2014
- Accepted March 1, 2014
- First published March 24, 2014.
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