No abstract available
Publication types
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Historical Article
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Research Support, Non-U.S. Gov't
MeSH terms
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Cause of Death / trends*
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Delivery of Health Care / history
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Delivery of Health Care / methods
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History, 20th Century
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Humans
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Infant
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Infant Mortality / trends*
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Infant Nutritional Physiological Phenomena*
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Infant, Newborn
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United States / epidemiology