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Lactulose and mannitol excretion in rural Malawian children at risk for environmental enteric dysfunction. The units of lactulose and mannitol are % of oral dose that was excreted by weight. The solid line indicates the best fit line and the dotted lines the 95% CI of the line. A strong positive correlation exists between absorption of the mono- and disaccharide, Pearson’s r = 0.58, P < 0.0001 and Spearman’s r = 0.68 P < 0.0001.
