Hypolactasia and the irritable bowel syndrome in Ireland.
D000293:Adolescent; D000328:Adult; D000368:Aged; D003109:Colonic Diseases, Functional / Q000201:enzymology*; D005260:Female; D005696:Galactosidases / Q000097:blood*; D006801:Humans; D007494:Ireland; D007787:Lactose Intolerance / Q000201:enzymology*; D008297:Male; D008875:Middle Aged; D001616:beta-Galactosidase / Q000097:blood*
D005696:Galactosidases; D001616:beta-Galactosidase