Cervix UteriCervical RipeningUterine Cervical NeoplasmsCervical Intraepithelial NeoplasiaUterine Cervical DysplasiaPapillomavirus InfectionsPapillomaviridaeHuman papillomavirus 16Mucous MembraneBiopsyCarcinoma, Squamous CellImmunohistochemistryPregnancyTumor Markers, BiologicalRNA, MessengerReverse Transcriptase Polymerase Chain ReactionGene Expression Regulation, NeoplasticDNA, ViralPolymerase Chain Reaction