No abstract available
MeSH terms
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Algorithms
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Ductus Arteriosus, Patent / diagnostic imaging
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Echocardiography / methods*
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Female
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Heart Ventricles / diagnostic imaging*
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Humans
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Infant, Newborn
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Infant, Premature / physiology*
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Male
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Organ Size
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Reference Values
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Retrospective Studies
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Stroke Volume*