title: A proposed method for the determination of the components of an oral contraceptive mixture (norethisterone acetate and ethinyl estradiol).
mesh_terms: D003276:Contraceptives, Oral / Q000032:analysis*; D003277:Contraceptives, Oral, Combined / Q000032:analysis*; D004997:Ethinyl Estradiol / Q000032:analysis*; D008722:Methods; D009640:Norethindrone / Q000032:analysis*; D013607:Tablets
chemical_list: D003276:Contraceptives, Oral; D003277:Contraceptives, Oral, Combined; D013607:Tablets; D004997:Ethinyl Estradiol; D009640:Norethindrone