Tajima, Kazuo Challenging epidemiological strategy for paradoxical evidence on the risk of gastric cancer from Helicobacter pylori infection. [electronic resource] - Japanese journal of clinical oncology Aug 2002 - 275-6 p. digital Publication Type: Editorial; Comment ISSN: 0368-2811 Standard No.: 10.1093/jjco/hyf078 doi Subjects--Topical Terms: Helicobacter Infections--complicationsHelicobacter pylori--pathogenicityHumansIncidenceRiskStomach Neoplasms--epidemiologyVirulence