No abstract available
Publication types
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Carcinoma in Situ / pathology
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Esophageal Neoplasms / etiology
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Esophageal Neoplasms / pathology*
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Esophagitis / complications
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Humans
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Papilloma / pathology
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Precancerous Conditions / pathology*
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Stomach Neoplasms / etiology
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Stomach Neoplasms / pathology*