- Correspondence to R Agca, MD, Department of Rheumatology, Amsterdam Rheumatology and Immunology Center, Reade, Dr Jan van Breemenstraat 2, 1056 AB Amsterdam, The Netherlands;
- Received October 19, 2015
- Revised January 5, 2016
- Accepted January 11, 2016
- First published February 17, 2016.
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