Lactase deficiency: the world pattern today.
D000328:Adult; D000349:Africa; D000818:Animals; D001208:Asia; D044383:Black People; D002648:Child; D002675:Child, Preschool; D004326:Drinking; D005006:Ethnicity; D005060:Europe; D006801:Humans; D007557:Israel; D007585:Jews; D007787:Lactose Intolerance / Q000453:epidemiology* / Q000209:etiology; D008892:Milk; D014481:United States; D001741:Black or African American