title: Historical review of the combined oral contraceptive pill and injectable progestogens.
authors.affiliation: Imperial Cancer Research Fund, London, UK.
authors.forename: A
authors.initials: A
authors.lastname: Szarewski
mesh_terms: D003271:Contraceptive Agents, Female / Q000266:history*; D003276:Contraceptives, Oral / Q000266:history*; D005193:Family Planning Services / Q000266:history; D049673:History, 20th Century; D006801:Humans; D007273:Injections, Intramuscular; D017258:Medroxyprogesterone Acetate / Q000266:history*; D045167:Progesterone Congeners / Q000266:history*
chemical_list: D003271:Contraceptive Agents, Female; D003276:Contraceptives, Oral; D045167:Progesterone Congeners; D017258:Medroxyprogesterone Acetate