title: The place of combined oral contraceptives in contraception.
authors.affiliation: The City of London Migraine Clinic, UK.
authors.forename: E A
authors.initials: EA
authors.lastname: MacGregor
authors.forename: B
authors.initials: B
authors.lastname: de Lignières
mesh_terms: D001943:Breast Neoplasms / Q000139:chemically induced; D003267:Contraception / Q000379:methods* / Q000523:psychology; D003277:Contraceptives, Oral, Combined / Q000494:pharmacology* / Q000627:therapeutic use; D005260:Female; D006801:Humans; D007511:Ischemia / Q000139:chemically induced; D008881:Migraine Disorders / Q000188:drug therapy; D016017:Odds Ratio; D010060:Ovulation / Q000187:drug effects*; D045167:Progesterone Congeners / Q000494:pharmacology* / Q000627:therapeutic use; D012307:Risk Factors; D020521:Stroke / Q000139:chemically induced
chemical_list: D003277:Contraceptives, Oral, Combined; D045167:Progesterone Congeners