title: Half a century of the oral contraceptive pill: historical review and view to the future.
authors.affiliation: Department of Obstetrics and Gynaecology, University of Toronto, Ontatrio, Canada.
authors.forename: Pamela Verma
authors.initials: PV
authors.lastname: Liao
authors.forename: Janet
authors.initials: J
authors.lastname: Dollin
mesh_terms: D002170:Canada; D003267:Contraception / Q000941:ethics / Q000266:history* / Q000379:methods; D003278:Contraceptives, Oral, Hormonal / Q000009:adverse effects / Q000266:history*; D005260:Female; D049673:History, 20th Century; D049674:History, 21st Century; D006801:Humans; D046269:Reproductive Rights / Q000941:ethics / Q000266:history* / Q000331:legislation & jurisprudence; D054556:Venous Thromboembolism / Q000139:chemically induced; D014933:Women's Rights / Q000941:ethics / Q000266:history*
chemical_list: D003278:Contraceptives, Oral, Hormonal