No abstract available
MeSH terms
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Gastrointestinal Neoplasms / etiology*
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Gastrointestinal Neoplasms / pathology
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Helicobacter Infections / pathology
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Helicobacter pylori
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Humans
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Lymphoma, B-Cell, Marginal Zone / etiology*
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Lymphoma, B-Cell, Marginal Zone / pathology