Epidemiology and genetics of lactose malabsorption.
D000328:Adult; D000368:Aged; D003431:Cross-Cultural Comparison; D004957:Estonia; D005260:Female; D005387:Finland; D006801:Humans; D007787:Lactose Intolerance / Q000453:epidemiology* / Q000235:genetics; D008297:Male; D008875:Middle Aged