No abstract available
MeSH terms
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Chronic Disease
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Duodenitis / microbiology
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Gastric Mucosa / pathology
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Gastritis / microbiology
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Helicobacter Infections* / pathology
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Helicobacter pylori / isolation & purification*
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Humans
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Intestinal Mucosa / pathology
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Peptic Ulcer / microbiology*
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Peptic Ulcer / pathology