换一批摘要篇首：INTRODUCTIONIt is generally accepted that Helicobacter pylori ( H.pylori) infection has a role in duodenal ulceration .Eradicaton of H .pylori accelerates healing compared with placebo in the absence of control of gastric secretion and reduces ulcer recurrence .There is increasing evidence ,however ,that is may not be the primary cause of duodenal ulceration ,but that is may be a secondary factor in a nnmber of cases .This possibility is supported by four sets of observations : 1 Geographical distribution:
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关键词
Helicobacter pylori /pathogenicityHelicobacter infections/etiologyHelicobacter infections/complicationsstomach ulcer/etiology
分类号
R57（消化系及腹部疾病）
栏目名称
发布时间
2006-07-31（万方平台首次上网日期，不代表论文的发表时间）
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