Contraceptives and the new trend in breast-feeding--a causal connection?
D001942:Breast Feeding; D003267:Contraception / Q000639:trends; D003276:Contraceptives, Oral; D003278:Contraceptives, Oral, Hormonal; D005260:Female; D006801:Humans; D007434:Intrauterine Devices; D007435:Intrauterine Devices, Copper; D007774:Lactation / Q000187:drug effects; D011247:Pregnancy; D011374:Progesterone / Q000008:administration & dosage / Q000494:pharmacology; D011388:Prolactin / Q000096:biosynthesis
D003276:Contraceptives, Oral; D003278:Contraceptives, Oral, Hormonal; D011374:Progesterone; D011388:Prolactin