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The present study demonstrated that frequent rice intake was a risk factor for atrophic gastritis among the H. pylori-infected Japanese-Brazilians, suggesting that diet including rice plays a role in the step from H. pylori infection to gastric atrophy.

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This study demonstrated that the associations between H. pylori seropositivity and TNF-A genotypes were not marked for Japanese Brazilians. The genotypes were not associated with gastric atrophy among the seropositive individuals.