Serum Ferritin, Vitamin D, and Vitamin B12 Levels and Their Relationship with Disease Activity in Patients with Rheumatoid Arthritis
Aim: To evaluate the associations of serum ferritin, vitamin D, and vitamin B12 levels with disease activity measured by the Disease Activity Score 28-C-Reactive Protein (DAS28-CRP) and to compare these biomarkers between controls and patients with RA receiving conventional disease-modifying antirheumatic drugs (DMARDs...