2022. The Role of Serum Chitinase-3-Like 1 Protein (YKL-40) Level and its Correlation with Proinflammatory Cytokine in Patients with Rheumatoid Arthritis. Baghdad Science Journal. 19, 5 (Oct. 2022), 1014. DOI:https://doi.org/10.21123/bsj.2022.6293.