- Correspondence to Dr Xavier Puéchal, National Referral Center for Rare Systemic Autoimmune Diseases, Hôpital Cochin, Assistance Publique-Hôpitaux de Paris, Université Paris Descartes, 27 rue du Faubourg Saint-Jacques, Paris 75014, France; .
- Received September 17, 2012
- Revised November 7, 2012
- Accepted December 2, 2012
- First published January 3, 2013.
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