[1] CHU Jean Minjoz, Serv Rhumatol, Besancon, France
[2] Ctr Hosp, Rheumatol, St Brieuc, France
[3] CHU Clermont Ferrand, Rheumatol Dept, Clermont Ferrand, France
[4] Ch Abbeville, Abbeville, France
[5] Paris Descartes Univ, UPRES EA 4058, Paris, France
[6] CHU, Rheumatol, Strasbourg, France