title: [Risk of an unwanted pregnancy after a single unprotected coitus; observations on the current hormonal postcoital contraceptive methods].
authors.forename: A
authors.initials: A
authors.lastname: Webb
mesh_terms: D003282:Contraceptives, Postcoital, Hormonal; D004359:Drug Therapy, Combination; D004997:Ethinyl Estradiol / Q000008:administration & dosage; D005260:Female; D006801:Humans; D016912:Levonorgestrel / Q000008:administration & dosage; D011247:Pregnancy; D012306:Risk
chemical_list: D003282:Contraceptives, Postcoital, Hormonal; D004997:Ethinyl Estradiol; D016912:Levonorgestrel