Abdelhakim, Nada, et al. “Interleukin-6 Levels in Early and Late Rheumatoid Arthritis: Their Comparison and Correlation With Clinical and Laboratory Indicators of Disease Activity”. Biobacta Journal of Biochemistry and Molecular Biology, vol. 2, no. 1, May 2025, pp. 8-25, https://doi.org/10.71428/BJBMB.2025.0102.