title: Plasma levels and pharmacokinetics of ethynyl estrogens in various populations. I. Ethynylestradiol.
mesh_terms: D002140:California; D002986:Clinical Trials as Topic; D004305:Dose-Response Relationship, Drug; D004997:Ethinyl Estradiol / Q000008:administration & dosage / Q000097:blood* / Q000378:metabolism; D005260:Female; D006801:Humans; D007700:Kinetics; D009549:Nigeria; D009640:Norethindrone / Q000378:metabolism; D012846:Singapore; D013188:Sri Lanka; D013781:Texas; D013785:Thailand
chemical_list: D004997:Ethinyl Estradiol; D009640:Norethindrone