Effect of an oral contraceptive immediately post partum on initiation of lactation.
D001942:Breast Feeding; D003276:Contraceptives, Oral / Q000494:pharmacology*; D005260:Female; D006801:Humans; D007223:Infant; D007227:Infant Nutritional Physiological Phenomena; D007774:Lactation / Q000187:drug effects*; D008656:Mestranol / Q000494:pharmacology*; D009640:Norethindrone / Q000494:pharmacology*; D010919:Placebos; D011247:Pregnancy
D003276:Contraceptives, Oral; D010919:Placebos; D008656:Mestranol; D009640:Norethindrone