title: Levonorgestrel versus the "Yuzpe" regimen. New choices in emergency contraception.
authors: Department of Family and Community Medicine, University of Toronto.
authors: S M
authors: SM
authors: Lee
authors: S
authors: S
authors: Dunn
authors: M F
authors: MF
authors: Evans
mesh_terms: D000328:Adult; D003271:Contraceptive Agents, Female / Q000008:administration & dosage* / Q000009:adverse effects / Q000627:therapeutic use; D003281:Contraceptives, Postcoital / Q000008:administration & dosage* / Q000009:adverse effects / Q000627:therapeutic use; D004311:Double-Blind Method; D045166:Estradiol Congeners / Q000008:administration & dosage* / Q000009:adverse effects / Q000627:therapeutic use; D004997:Ethinyl Estradiol / Q000008:administration & dosage* / Q000009:adverse effects / Q000627:therapeutic use; D005194:Family Practice; D005260:Female; D006801:Humans; D016912:Levonorgestrel / Q000008:administration & dosage* / Q000009:adverse effects / Q000627:therapeutic use
chemical_list: D003271:Contraceptive Agents, Female; D003281:Contraceptives, Postcoital; D045166:Estradiol Congeners; D004997:Ethinyl Estradiol; D016912:Levonorgestrel