title: The elusive unequivocal Pap smear.
authors.forename: M L
authors.initials: ML
authors.lastname: Nielsen
authors.forename: W J
authors.initials: WJ
authors.lastname: Frable
mesh_terms: D003581:Cytodiagnosis / Q000592:standards / Q000639:trends*; D005260:Female; D006801:Humans; D065006:Papanicolaou Test; D012016:Reference Values; D002577:Uterine Cervical Diseases / Q000175:diagnosis; D014626:Vaginal Smears / Q000592:standards / Q000639:trends*