Publications

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antioxidant vitamins and risk of gastric cancer: a case-control study in portugal.we quantified the effect of antioxidant vitamins in gastric cancer risk, taking into account helicobacter pylori seropositivity and overall fruit and vegetable intake. incident cases were identified in two large hospitals in porto, portugal, and controls were randomly sampled among city dwellers. food intake was assessed with a previously validated semiquantitative food-frequency questionnaire. a commercially available chromatographic immunoassay was used for the detection of immunoglobulin g an ...200616965243
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