Choice of ethinyl estradiol as a postcoital pill.
D003281:Contraceptives, Postcoital; D004997:Ethinyl Estradiol / Q000008:administration & dosage* / Q000009:adverse effects; D005260:Female; D006801:Humans
D003281:Contraceptives, Postcoital; D004997:Ethinyl Estradiol