No abstract available
Publication types
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Letter
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Research Support, N.I.H., Extramural
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Research Support, U.S. Gov't, Non-P.H.S.
MeSH terms
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Breast Feeding / epidemiology
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Breast Feeding / statistics & numerical data*
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Data Collection / methods*
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Humans
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Lactation
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Milk, Human / metabolism*
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Suction / instrumentation*
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United States