Erratum to: Clin Rheumatol

DOI 10.1007/s10067-011-1925-9

We have noticed an error in the names of the three out of four authors in the version of the article initially published. Indeed, the first and last names of these authors have been inverted and should be corrected as follows: Jean-Luc (First name) Bernard (Last name); Thomas (First name) Bardin (Last name); Pascal (First name) Richette (Last name).