title: Levonorgestrel "Emergency Contraception" How Does it Work?
authors.forename: Kathleen M
authors.initials: KM
authors.lastname: Raviele
mesh_terms: D044363:Contraception, Postcoital; D003280:Contraceptives, Oral, Synthetic / Q000494:pharmacology*; D006801:Humans; D016912:Levonorgestrel / Q000494:pharmacology*
chemical_list: D003280:Contraceptives, Oral, Synthetic; D016912:Levonorgestrel