Perinatal Characteristics of Very Preterm Children.
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Intra uterine growth retardation is defined as an SDS score of -2.0SD below expectation for gestational age. Septicaemia was defined as a positive blood culture. Necrotizing enterocolitis was defined according to criteria given by Bell et al. Respiratory distress was defined as requiring assisted ventilation.
创建时间：
2015-12-02
