Cetin, Caglar, et al. “The Role of Performing a Routine Four-Quadrant Cervical Biopsy in Patients With Negative Colposcopic Findings in Increasing the Identification Rate of Cervical Intraepithelial Neoplasms”. EXPERIMENTAL BIOMEDICAL RESEARCH, vol. 2, no. 3, June 2019, pp. 111-20, doi:10.30714/j-ebr.2019353196.