The optimal time to clamp the umbilical cord.
D000751:Anemia, Neonatal / Q000517:prevention & control; D003072:Cognition Disorders / Q000517:prevention & control; D003250:Constriction; D005260:Female; D006801:Humans; D007224:Infant Care / Q000379:methods; D007231:Infant, Newborn; D021041:Placental Circulation / Q000502:physiology; D011247:Pregnancy; D013525:Surgical Instruments / Q000706:statistics & numerical data; D013997:Time Factors; D014470:Umbilical Cord