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Demographic Data
RDS, respiratory distress syndrome; PDA, patent ductus arteriosus confirmed with echocardiography; NEC, necrotizing enterocolitis; BPD, bronchopulmonary dysplasia, defined as an oxygen dependency at the corrected age of 36 weeks; IVH, intraventricular hemorrhage; PVL, periventricular leukomalacia; TPN, total parenteral nutrition.
