Progestogen-estrogen therapy in the menopause. A double blind study.
D004997:Ethinyl Estradiol / Q000627:therapeutic use*; D005260:Female; D006801:Humans; D008593:Menopause; D009640:Norethindrone / Q000627:therapeutic use*
D004997:Ethinyl Estradiol; D009640:Norethindrone