- Correspondence to Dr Ingegnoli Francesca, Department of Clinical Science & Community Health, Division of Rheumatology, Istituto Gaetano Pini, University of Milano, Piazza Cardinal Ferrari 1, Milano 20122, Italy;
- Received May 24, 2013
- Revised October 9, 2013
- Accepted November 24, 2013
- First published December 16, 2013.
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