title: Plasma levels of norethisterone in women with subcutaneous implants of norethisterone acetate.
mesh_terms: D000328:Adult; D004343:Drug Implants; D005260:Female; D006801:Humans; D009640:Norethindrone / Q000008:administration & dosage / Q000031:analogs & derivatives* / Q000097:blood / Q000378:metabolism; D000077563:Norethindrone Acetate
chemical_list: D004343:Drug Implants; D000077563:Norethindrone Acetate; D009640:Norethindrone