title: Challenging epidemiological strategy for paradoxical evidence on the risk of gastric cancer from Helicobacter pylori infection.
authors.forename: Kazuo
authors.initials: K
authors.lastname: Tajima
mesh_terms: D016481:Helicobacter Infections / Q000150:complications*; D016480:Helicobacter pylori / Q000472:pathogenicity; D006801:Humans; D015994:Incidence; D012306:Risk; D013274:Stomach Neoplasms / Q000453:epidemiology* / Q000209:etiology / Q000382:microbiology; D014774:Virulence