Abdul-Hussein, S. S., E. N. Ali, N. M. F. Alkhalidi, N. H. Zaki, and A. H. Ad’hiah. “Roles of IL-17A and IL-23 in the Pathogenesis of Ulcerative Colitis and Crohn’s Disease”. Iraqi Journal of Science, Vol. 62, no. 8, Aug. 2021, pp. 2526-35, doi:10.24996/ijs.2021.62.8.5.