No abstract available
MeSH terms
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Child, Preschool
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Cross-Sectional Studies
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Duodenal Ulcer / epidemiology*
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Female
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Germany / epidemiology
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Helicobacter Infections / epidemiology*
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Helicobacter Infections / transmission
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Helicobacter pylori*
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Humans
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Infectious Disease Transmission, Vertical
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Male
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Prevalence
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Risk Factors
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Stomach Ulcer / epidemiology*