- Correspondence to Professor Hubert Marotte, Department of Rheumatology, Hôpital Nord, University Hospital of Saint-Etienne, 42055 Saint-Etienne, Cedex 02, France;
- Received October 12, 2014
- Revised October 29, 2014
- Accepted November 7, 2014
- First published December 2, 2014.
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