title: Patient characteristics and endocervical cell recovery on Papanicolaou smears.
mesh_terms: D000328:Adult; D000367:Age Factors; D004912:Erythrocytes / Q000166:cytology; D005188:False Negative Reactions; D005260:Female; D006801:Humans; D008597:Menstrual Cycle; D008875:Middle Aged; D065006:Papanicolaou Test; D013997:Time Factors; D014626:Vaginal Smears / Q000379:methods*