[An epidemiological study on risk factors in peptic ulcer].
D000293:Adolescent; D000328:Adult; D000368:Aged; D000428:Alcohol Drinking; D000818:Animals; D002648:Child; D003069:Coffee / Q000009:adverse effects*; D005260:Female; D006801:Humans; D007564:Japan; D008297:Male; D008875:Middle Aged; D008892:Milk; D010437:Peptic Ulcer / Q000453:epidemiology* / Q000209:etiology; D012907:Smoking; D013662:Tea
D003069:Coffee; D013662:Tea