No abstract available
Publication types
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Comment
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Comparative Study
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Editorial
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Arizona / epidemiology
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Baltimore / epidemiology
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District of Columbia / epidemiology
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Environmental Health
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Heart Defects, Congenital / epidemiology*
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Humans
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Infant, Newborn
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Prevalence