- Correspondence to Dr Adeline Ruyssen-Witrand, Rheumatology Center, Purpan Teaching Hospital, 1 place du Dr Baylac, Toulouse 31059, Cedex 9, France;
- Received November 12, 2013
- Revised March 28, 2014
- Accepted April 6, 2014
- First published May 2, 2014.
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