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Bronchopulmonary dysplasia incidence was 24.4% in a large South American population and is related to greater resource utilization. Risk factors for bronchopulmonary dysplasia in this study were: surfactant requirement, mechanical ventilation, airleak, patent ductus arteriosus, late onset sepsis and necrotizing enterocolitis. These studies may provide useful information in the design of effective preventive perinatal strategies.

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