Grigore, M., Cojocaru, C., & Teleman, S. (2016). The role of inner border sign and ridge sign in detecting high-grade cervical intraepithelial neoplasia. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, 5(11), 3717–3721. https://doi.org/10.18203/2320-1770.ijrcog20163834