SLIMANI S, Abbas A, Ben-Ammar A, Kebaili D, Ali E-H, Rahal F, Khamari M-C, Baltache A, Khider I, Chiheub R, et al. Characteristics of rheumatoid arthritis in Algeria: a multicenter study. Rheumatology International. SeptembreRheumatology International. Septembre. 2014;34 :1235–1239.