title: Low dose injectable contraceptive norethisterone enanthate 200 mg monthly clinical trials.
mesh_terms: D002986:Clinical Trials as Topic; D005260:Female; D006801:Humans; D009640:Norethindrone / Q000031:analogs & derivatives*; D011247:Pregnancy
chemical_list: C024319:norethindrone enanthate; D009640:Norethindrone