Al-Ubaidi, A.H. et al. 2013. Comparism between Anti-RA33, Anti-CCP antibodies and Rheumatoid Factor in the Diagnosis of Rheumatoid Arthritis in Iraqi Patients. Journal of the Faculty of Medicine Baghdad. 55, 1 (Apr. 2013), 64–67. DOI:https://doi.org/10.32007/jfacmedbagdad.551672.