No abstract available
MeSH terms
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Adolescent
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Adult
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Age Distribution
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Aged
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Aged, 80 and over
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Antibodies, Bacterial / blood
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Antibodies, Viral / blood
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Child
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Child, Preschool
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Comorbidity
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Female
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Helicobacter Infections / blood*
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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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Hepatitis A / blood*
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Hepatitis A / epidemiology*
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Hepatitis A / transmission
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Hepatitis A virus / immunology
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Humans
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Iran / epidemiology
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Male
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Middle Aged
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Risk Factors
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Seroepidemiologic Studies
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Sex Distribution
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Socioeconomic Factors
Substances
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Antibodies, Bacterial
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Antibodies, Viral