title: A personal history of the progress in contraception during the past 60 years.
authors.forename: H
authors.initials: H
authors.lastname: Lehfeldt
mesh_terms: D003267:Contraception / Q000266:history* / Q000379:methods; D005060:Europe; D005193:Family Planning Services / Q000266:history; D005260:Female; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D008297:Male; D014481:United States