title: Letter: The false positive smear.
mesh_terms: D001826:Body Fluids / Q000166:cytology; D003581:Cytodiagnosis / Q000592:standards*; D003951:Diagnostic Errors; D005260:Female; D006801:Humans; D009369:Neoplasms / Q000175:diagnosis*; D013194:Staining and Labeling; D014626:Vaginal Smears