No abstract available
Publication types
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Antibodies, Viral* / analysis
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Antigens, Viral* / analysis
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Child, Preschool
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Hemagglutination Tests
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Hepatitis A / immunology*
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Humans
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Immune Adherence Reaction
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Infant
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New York City
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Urban Population
Substances
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Antibodies, Viral
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Antigens, Viral