title: A retrospective analysis of family planning Papanicolaou smear data: lessons for the future. I. The Chicago experience, 1961-1974.
mesh_terms: D000293:Adolescent; D000328:Adult; D002641:Chicago; D005193:Family Planning Services; D005260:Female; D006801:Humans; D065006:Papanicolaou Test; D012189:Retrospective Studies; D002577:Uterine Cervical Diseases / Q000175:diagnosis; D002583:Uterine Cervical Neoplasms / Q000175:diagnosis; D014626:Vaginal Smears