B. H. Al-Ghurabi, L. G. Al-Saady, and A. A. Al-Hassan, “The role of serum IL-6 in colorectal cancer patients and it’s relationship with serum CEA level”, JFacMedBagdad, vol. 51, no. 4, pp. 403–406, Jan. 2010, doi: 10.32007/jfacmedbagdad.5141094.