No abstract available
MeSH terms
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Breast Feeding* / statistics & numerical data
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Breast Feeding* / trends
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Dose-Response Relationship, Immunologic
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Female
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Humans
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Infant, Newborn
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Infant, Premature / immunology*
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Maternal-Child Health Centers
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Milk, Human / immunology*
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Organizational Policy
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Practice Guidelines as Topic
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Pregnancy
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Public Health
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United States / epidemiology