Reduction of the oral contraceptive estrogen burden by alternate day estrogen administration.
D004334:Drug Administration Schedule; D004341:Drug Evaluation; D004717:Endometrium / Q000187:drug effects; D004997:Ethinyl Estradiol / Q000008:administration & dosage* / Q000009:adverse effects / Q000494:pharmacology; D005260:Female; D006801:Humans; D008598:Menstruation / Q000187:drug effects*; D008599:Menstruation Disturbances / Q000139:chemically induced; D009640:Norethindrone / Q000008:administration & dosage* / Q000009:adverse effects / Q000494:pharmacology; D010060:Ovulation / Q000187:drug effects*; D011247:Pregnancy
D004997:Ethinyl Estradiol; D009640:Norethindrone