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Correlations between in vitro area under the curve (AUC) gas production (mL·hour) and in vivo AUC colonic gas (mL·min) as assessed by MRI for (A) inulin r2=0.58, p=0.03, (B) psyllium r2=0.14, p=0.35 and (C) inulin and psyllium in combination r2=0.003, p=0.89.
