No abstract available
MeSH terms
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Case-Control Studies
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Chronic Disease
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Ductus Arteriosus, Patent / complications*
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Ductus Arteriosus, Patent / surgery*
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Hemorrhage / diagnosis*
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Hemorrhage / epidemiology
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Hemorrhage / etiology*
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Humans
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Incidence
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Infant, Newborn
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Infant, Premature, Diseases
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Lung Diseases / diagnosis*
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Lung Diseases / epidemiology
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Lung Diseases / etiology*
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Pulmonary Surfactants / adverse effects
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Respiratory Distress Syndrome, Newborn / drug therapy
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Retrospective Studies