No abstract available
MeSH terms
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Cardiac Output / physiology
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Diastole / physiology*
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Echocardiography / methods*
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Echocardiography, Doppler / methods*
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Esophagus
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Humans
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Mitral Valve / diagnostic imaging
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Mitral Valve / physiology
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Positive-Pressure Respiration*
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Systole / physiology*
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Ventricular Function, Left / physiology*