title: [Letter: Pregnancy prevention].
mesh_terms: D003267:Contraception; D003281:Contraceptives, Postcoital; D004054:Diethylstilbestrol / Q000008:administration & dosage; D004997:Ethinyl Estradiol / Q000008:administration & dosage; D005260:Female; D006801:Humans; D011247:Pregnancy
chemical_list: D003281:Contraceptives, Postcoital; D004997:Ethinyl Estradiol; D004054:Diethylstilbestrol
vernacular_title: Verhinderung einer Schwangerschaft