A. A. Gamal el Din, R. S. E. Esmail, and A. A. Hareedy, “Vascular Endothelial Growth Factor in Colonic Cancer, Ulcerative Colitis and Colonic Adenoma: An Immunohistochemical Study”, Open Access Maced J Med Sci, vol. 2, no. 3, pp. 439–443, Sep. 2014.