[Incidence of atrophic gastritis in high and low-risk areas of gastric cancer].
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002681:China; D005260:Female; D005756:Gastritis / Q000453:epidemiology*; D005757:Gastritis, Atrophic / Q000453:epidemiology* / Q000473:pathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D012737:Sex Factors; D013272:Stomach Diseases / Q000453:epidemiology; D013274:Stomach Neoplasms / Q000453:epidemiology*