No abstract available
MeSH terms
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Adult
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Antibodies, Bacterial / analysis
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Child
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Enzyme-Linked Immunosorbent Assay
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Helicobacter Infections / epidemiology
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Helicobacter Infections / transmission*
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Helicobacter pylori* / immunology
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Humans
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Immunoglobulin G / analysis
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Prevalence
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Seroepidemiologic Studies
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Social Class
Substances
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Antibodies, Bacterial
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Immunoglobulin G