Helicobacter pylori infection--a common worldwide environmental risk factor for gastric cancer?
Sipponen
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D005756:Gastritis / Q000453:epidemiology / Q000382:microbiology; D016481:Helicobacter Infections; D016480:Helicobacter pylori; D006801:Humans; D015994:Incidence; D012307:Risk Factors; D012923:Social Class; D013274:Stomach Neoplasms / Q000453:epidemiology / Q000382:microbiology*