title: Patterns of oral contraceptive use in the United Kingdom.
authors.affiliation: University Department of Community Medicine and General Practice, Radcliffe, Infirmary, Oxford, UK.
authors.forename: M P
authors.initials: MP
authors.lastname: Vessey
authors.forename: M
authors.initials: M
authors.lastname: Thorogood
mesh_terms: D000328:Adult; D000367:Age Factors; D003268:Contraception Behavior / Q000639:trends*; D003276:Contraceptives, Oral / Q000008:administration & dosage*; D003277:Contraceptives, Oral, Combined / Q000008:administration & dosage*; D003279:Contraceptives, Oral, Sequential / Q000008:administration & dosage*; D004363:Drug Utilization; D005260:Female; D006801:Humans; D011372:Progestins / Q000008:administration & dosage; D006113:United Kingdom
chemical_list: D003276:Contraceptives, Oral; D003277:Contraceptives, Oral, Combined; D003279:Contraceptives, Oral, Sequential; D011372:Progestins