Endometrial histology and progesterone levels in women using norethindrone acetate implants for contraception.
D000328:Adult; D004343:Drug Implants; D004717:Endometrium / Q000166:cytology*; D005260:Female; D006801:Humans; D009640:Norethindrone / Q000008:administration & dosage* / Q000627:therapeutic use; D011374:Progesterone / Q000097:blood*
D004343:Drug Implants; D011374:Progesterone; D009640:Norethindrone