title: Essential metals in oral contraceptive tablets.
mesh_terms: D002118:Calcium / Q000032:analysis / Q000097:blood; D003276:Contraceptives, Oral / Q000032:analysis*; D003300:Copper / Q000032:analysis; D004967:Estrogens / Q000032:analysis; D008274:Magnesium / Q000032:analysis; D008670:Metals / Q000032:analysis*; D011188:Potassium / Q000032:analysis; D011374:Progesterone / Q000032:analysis; D012964:Sodium / Q000032:analysis; D015032:Zinc / Q000032:analysis
chemical_list: D003276:Contraceptives, Oral; D004967:Estrogens; D008670:Metals; D011374:Progesterone; D003300:Copper; D012964:Sodium; D008274:Magnesium; D015032:Zinc; D011188:Potassium; D002118:Calcium