No abstract available
MeSH terms
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Aged
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Biopsy
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Carcinoma, Squamous Cell / diagnosis*
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Carcinoma, Squamous Cell / pathology*
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Esophageal Neoplasms / diagnosis*
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Esophageal Neoplasms / pathology*
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Esophagogastric Junction / pathology*
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Gastroscopy
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Histocytochemistry
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Humans
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Male
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Stomach Neoplasms / diagnosis*
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Stomach Neoplasms / pathology*