[1] Ctr Hosp Jacques Lacarin, Serv Rhumatol, Vichy, France
[2] CHU G Montpied, DRCI, F-63003 Clermont Ferrand, France
[3] Univ Clermont 1, Fac Med, F-63003 Clermont Ferrand, France
[4] Gabriel Montpied Teaching Hosp, Rheumatol Dept, F-63000 Clermont Ferrand, France