title: Plans for a cohort investigation of abnormal cervical cytology among users of different methods of birth control.
mesh_terms: D000293:Adolescent; D000328:Adult; D001943:Breast Neoplasms / Q000453:epidemiology; D002584:Cervix Uteri / Q000473:pathology*; D002986:Clinical Trials as Topic; D003201:Computers; D003273:Contraceptive Devices; D003276:Contraceptives, Oral; D003710:Demography; D005193:Family Planning Services; D005260:Female; D005500:Follow-Up Studies; D006285:Health Planning; D006801:Humans; D008722:Methods; D010600:Pharmacology; D014481:United States; D002583:Uterine Cervical Neoplasms / Q000453:epidemiology; D014626:Vaginal Smears / Q000145:classification
chemical_list: D003276:Contraceptives, Oral