Hussein, Areej A., et al. “The Expression of Matrix Metalloproteinase-2 and Cyclooxygenase-2 by Immunohistochemistry in Patients With Colorectal Carcinoma”. Journal of the Faculty of Medicine Baghdad, vol. 53, no. 3, Oct. 2011, pp. 301-5, https://doi.org/10.32007/jfacmedbagdad.533834.