- Correspondence to Professor Willem Lems, Department of Rheumatology, Amsterdam Rheumatology and Immunology Center, VU University Medical Center, Postbox 7057, 1007 MB Amsterdam, The Netherlands
- Received July 31, 2016
- Revised November 13, 2016
- Accepted December 2, 2016
- First published December 22, 2016.
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