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Adjusted survival curves for necrotizing enterocolitis (NEC) or death by amount of human milk (ml kg–1) over the first 14 days of life. Survival curves adjusted for birth weight, small for gestational age, race, patent ductus arteriosus (PDA), antenatal steroids, duration of mechanical ventilation and Network Center. Survival curves represent predicted survival time free of NEC or death and do not directly correspond to the number of infants.
