title: Letter: Rifampicin and oral contraception.
mesh_terms: D001711:Biotransformation / Q000187:drug effects; D003276:Contraceptives, Oral / Q000378:metabolism / Q000494:pharmacology*; D004336:Drug Antagonism; D004997:Ethinyl Estradiol / Q000378:metabolism / Q000494:pharmacology*; D005260:Female; D006801:Humans; D008099:Liver / Q000378:metabolism; D012293:Rifampin / Q000494:pharmacology* / Q000627:therapeutic use
chemical_list: D003276:Contraceptives, Oral; D004997:Ethinyl Estradiol; D012293:Rifampin