- Correspondence to Dr Pascal Hendrik Pieter de Jong, Department of Rheumatology, University Medical Center, Erasmus MC, Room Na850, Postbus 2040, Rotterdam 3000 CA, The Netherlands;
- Received October 21, 2013
- Revised April 14, 2014
- Accepted April 16, 2014
- First published May 1, 2014.
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