Lactose intolerance in the Koreans.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000818:Animals; D005247:Feeding Behavior; D005260:Female; D006801:Humans; D007421:Intestine, Small / Q000000981:diagnostic imaging; D007723:Korea; D007787:Lactose Intolerance / Q000000981:diagnostic imaging / Q000453:epidemiology*; D008297:Male; D008875:Middle Aged; D008892:Milk; D011859:Radiography; D012737:Sex Factors; D012923:Social Class