title: Letter: Effects of oral contraceptives on endogenous hormone secretion.
mesh_terms: D003276:Contraceptives, Oral / Q000494:pharmacology*; D004997:Ethinyl Estradiol / Q000494:pharmacology; D005260:Female; D006801:Humans; D007986:Luteinizing Hormone / Q000378:metabolism / Q000652:urine*; D008656:Mestranol / Q000494:pharmacology; D009640:Norethindrone / Q000494:pharmacology; D012636:Secretory Rate / Q000187:drug effects
chemical_list: D003276:Contraceptives, Oral; D004997:Ethinyl Estradiol; D007986:Luteinizing Hormone; D008656:Mestranol; D009640:Norethindrone