Oral contraceptives and blood-iron.
D003276:Contraceptives, Oral / Q000494:pharmacology*; D004997:Ethinyl Estradiol / Q000494:pharmacology*; D005260:Female; D006452:Hemoglobinometry; D006801:Humans; D007501:Iron / Q000097:blood*; D009640:Norethindrone / Q000494:pharmacology*; D011485:Protein Binding
D003276:Contraceptives, Oral; D004997:Ethinyl Estradiol; D007501:Iron; D009640:Norethindrone