Determination of lactose malabsorption by breath analysis with gas chromatography.
D000293:Adolescent; D000328:Adult; D001944:Breath Tests; D002849:Chromatography, Gas / Q000379:methods; D006801:Humans; D007787:Lactose Intolerance / Q000175:diagnosis*; D007789:Lactose Tolerance Test / Q000379:methods