- Correspondence to Dr Fons A J van de Loo, Rheumatology Research and Advanced Therapeutics, Department of Rheumatology, Radboud University Nijmegen Medical Centre, PO Box 9101, Nijmegen 6500 HB, The Netherlands;
- Received August 6, 2012
- Revised November 27, 2012
- Accepted November 27, 2012
- First published January 3, 2013.
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