[A pilot study of mass survey for gastric diseases (author's transl)].
D000328:Adult; D000368:Aged; D002681:China; D005260:Female; D005773:Gastroscopy; D006801:Humans; D008297:Male; D008403:Mass Screening; D008875:Middle Aged; D010865:Pilot Projects; D013272:Stomach Diseases / Q000453:epidemiology*; D013274:Stomach Neoplasms / Q000453:epidemiology