- Correspondence to Dr Sofia Ramiro, Department of Rheumatology, Leiden University Medical Center, Albinusdreef 2, PO Box 9600, Leiden 2300 RC, The Netherlands;
- Received October 21, 2016
- Revised December 28, 2016
- Accepted February 19, 2017
- First published March 15, 2017.
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