- Correspondence to Professor Gabriele Valentini, Rheumatology Section, Department of Clinical and Experimental Medicine, Second University of Naples, II Policlinico, Edificio 3, Via Pansini 5, Naples 80131, Italy;
- Received April 22, 2016
- Revised July 13, 2016
- Accepted August 21, 2016
- First published September 12, 2016.
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