Timing of cord ligation and newborn respiratory distress.
D005260:Female; D006801:Humans; D006819:Hyaline Membrane Disease / Q000209:etiology*; D007231:Infant, Newborn; D011247:Pregnancy; D012127:Respiratory Distress Syndrome, Newborn / Q000209:etiology*; D014470:Umbilical Cord