[Some characteristics and problems of the gastric ulcer in the aged (author's transl)].
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002648:Child; D002675:Child, Preschool; D005247:Feeding Behavior; D005260:Female; D006801:Humans; D007564:Japan; D008297:Male; D008875:Middle Aged; D013276:Stomach Ulcer / Q000453:epidemiology / Q000209:etiology*; D013315:Stress, Psychological / Q000150:complications