title: [Emergency contraception, Levonorgestrel and ectopic pregnancy].
authors.forename: Carlos Y
authors.initials: CY
authors.lastname: Valenzuela
mesh_terms: D044363:Contraception, Postcoital / Q000009:adverse effects*; D003280:Contraceptives, Oral, Synthetic / Q000009:adverse effects*; D003283:Contraceptives, Postcoital, Synthetic / Q000009:adverse effects; D005260:Female; D006801:Humans; D016912:Levonorgestrel / Q000009:adverse effects*; D011247:Pregnancy; D011271:Pregnancy, Ectopic / Q000139:chemically induced*; D012306:Risk
chemical_list: D003280:Contraceptives, Oral, Synthetic; D003283:Contraceptives, Postcoital, Synthetic; D016912:Levonorgestrel