title: Oral contraceptives and early-term abortifacients during classical antiquity and the Middle Ages.
authors.forename: J M
authors.initials: JM
authors.lastname: Riddle
mesh_terms: D003267:Contraception / Q000266:history*; D005193:Family Planning Services / Q000266:history*; D049690:History, Ancient; D049692:History, Early Modern 1451-1600; D049691:History, Medieval; D049711:History, Modern 1601-; D004364:Pharmaceutical Preparations / Q000266:history*
chemical_list: D004364:Pharmaceutical Preparations