- Correspondence to Dr Diane van der Woude, Department of Rheumatology C1-R, Leiden University Medical Center, Albinusdreef 2, PO Box 9600, Leiden 2300 RC, The Netherlands;
- Received April 17, 2015
- Revised October 28, 2015
- Accepted November 13, 2015
- First published December 29, 2015.
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