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Helicobacter pylori causes peptic ulceration and gastric adenocarcinoma; the latter is common in Iran but not in Iraq. We hypothesized that more virulent H. pylori strains may be found in Iran than(More)
BACKGROUND Infection with Helicobacter pylori possessing a newly described virulence factor--duodenal ulcer-promoting gene A (dupA)--has been associated with duodenal ulceration and increased gastric(More)