No abstract available
MeSH terms
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Adolescent
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Blood Flow Velocity
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Child
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Child, Preschool
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Diastole / physiology
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Echocardiography, Doppler / methods*
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Echocardiography, Doppler, Pulsed
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Humans
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Infant
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Infant, Newborn
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Systole / physiology
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Ventricular Function, Left*