- Correspondence to Dr Fabrizio De Benedetti, Division of Rheumatology, IRCCS Ospedale Pediatrico Bambino Gesù, Piazza S. Onofrio 4, Roma 00165, Italy;
- Received December 11, 2015
- Revised May 12, 2016
- Accepted May 17, 2016
- First published June 13, 2016.
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