Jaafar, R. G.; Eissa, A. A. EFFECT OF REDUCED FOLATE CARRIER GENE POLYMORPHISM (G80A) ON THE METHOTREXATE LEVEL IN PATIENTS WITH RHEUMATOID ARTHRITIS AND ITS RELATION TO THE DISEASE ACTIVITY. SJUOZ 2026, 14 (1), 97-103. https://doi.org/10.25271/sjuoz.2026.14.1.1700.