No abstract available
MeSH terms
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Adolescent
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Age Factors
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Child
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Dyspepsia / diagnosis*
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Dyspepsia / epidemiology
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Endoscopy, Gastrointestinal / standards
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Enzyme-Linked Immunosorbent Assay / standards
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Helicobacter Infections / diagnosis*
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Helicobacter Infections / epidemiology
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Helicobacter pylori*
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Humans