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It remains unclear why the spectrum of H.pylori-related diseases differs among differentgeographic regions. We examined the non-H. pyloricontamination rates of the stomach in patients withduodenal ulcer or gastric adenocarcinoma from threedifferent regions with different spectra of H.pylori-related diseases. Gastric biopsies were culturedfrom patients with duodenal ulcer or histologicallyproven gastric...
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