Salih, Hussein A., and Karrar S. Zayed. “Correlation of Serum IL-1β Level in Rheumatoid Arthritis Patients With Disease Severity Parameters”. South Eastern European Journal of Public Health (September 30, 2024): 621–625. Accessed February 2, 2026. https://www.seejph.com/index.php/seejph/article/view/1271.