title: Electroencephalographic changes during long term treatment with oral contraceptives.
mesh_terms: D000328:Adult; D001921:Brain / Q000187:drug effects*; D002715:Chlormadinone Acetate / Q000494:pharmacology*; D003276:Contraceptives, Oral / Q000494:pharmacology*; D004569:Electroencephalography; D004997:Ethinyl Estradiol / Q000494:pharmacology*; D005260:Female; D006801:Humans; D008525:Medroxyprogesterone / Q000494:pharmacology*; D008656:Mestranol / Q000494:pharmacology*; D009640:Norethindrone / Q000494:pharmacology*; D012890:Sleep
chemical_list: D003276:Contraceptives, Oral; D002715:Chlormadinone Acetate; D004997:Ethinyl Estradiol; D008656:Mestranol; D008525:Medroxyprogesterone; D009640:Norethindrone