A. Safi, M.-A. and Houssien, D.T. 1981. Anti-Cyclic Citrullinated Peptide and Rheumatoid Factor (Prevalence and Association) in Saudi Rheumatoid Arthritis Patients. Journal of King Abdulaziz University: Medical Sciences. 25, 2 (Dec. 1981), 1–10. DOI:https://doi.org/10.4197/Med.25-2.1.