I. . Graterol, H. . Finol, M. . Correnti, and M. . Ávila, “Ultrastructural pathology of vascular endothelial in patients with premalignant and malignant cervix lesions infected with papillomavirus”, Sci. J. Biol. Sci., vol. 2, no. 7, pp. 145-151, Jul. 2013.