Lactase deficiency. Diagnosis and management.
D000328:Adult; D001315:Australia; D001944:Breath Tests; D002675:Child, Preschool; D005006:Ethnicity; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007787:Lactose Intolerance / Q000175:diagnosis / Q000178:diet therapy / Q000453:epidemiology*; D007789:Lactose Tolerance Test