- Correspondence to Professor Alberto Martini, Pediatria II, Reumatologia, University of Genoa, EULAR Centre of Excellence in Rheumatology 2008-13, IRCCS G Gaslini, Largo G Gaslini 5, 16147 Genova, Italy;
- Accepted 31 December 2010
- Published in print 1 February 2011.
- Published online 12 February 2011.
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