- Correspondence to Dr J Avouac, Sorbonne Paris Cité, Service de rhumatologie A, Hôpital Cochin, Paris Descartes University, 27 rue du faubourg Saint Jacques, Paris 75014, France;
- Received August 26, 2012
- Revised November 19, 2012
- Accepted December 26, 2012
- First published January 24, 2013.
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