No abstract available
MeSH terms
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Case-Control Studies
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Catechin / analogs & derivatives*
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Catechin / therapeutic use*
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Cohort Studies
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Esophageal Neoplasms / prevention & control*
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Flavonoids*
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Humans
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Male
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Middle Aged
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Phenols / therapeutic use*
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Polymers / therapeutic use*
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Prospective Studies
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Stomach Neoplasms / prevention & control*
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Tea*
Substances
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Flavonoids
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Phenols
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Polymers
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Tea
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Catechin
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gallocatechol