No abstract available
MeSH terms
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Auscultation / methods
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Auscultation / standards*
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Child, Preschool
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Heart Rate*
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Heart Sounds*
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Humans
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Infant
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Infant, Newborn
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Nursing Assessment / methods
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Nursing Assessment / standards*
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Nursing Evaluation Research
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Sleep Stages*
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Time Factors
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Wakefulness*