- Correspondence to Dr Leonie van Duivenvoorde, Department of Clinical Immunology and Rheumatology, Academic Medical Center/University of Amsterdam, Meibergdreef 9, Room K0-105, Amsterdam 1105AZ, The Netherlands;
- Received February 19, 2014
- Accepted February 20, 2014
- First published March 4, 2014.
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