Abdul Ghany, Mohanad M., et al. “Correlation of CD44v6 and Type IV Collagen Immunohistochemical Expression in Borderline and Malignant Surface Epithelial Tumors”. AL-Kindy College Medical Journal, vol. 12, no. 2, Dec. 2016, pp. 34-42, https://doi.org/10.47723/kcmj.v12i2.299.