Al-Ghurabi, Batool H., et al. “The Role of Serum IL-6 in Colorectal Cancer Patients and it’s Relationship With Serum CEA Level”. Journal of the Faculty of Medicine Baghdad, vol. 51, no. 4, Jan. 2010, pp. 403-6, https://doi.org/10.32007/jfacmedbagdad.5141094.