Parry, D M Assessment of intestinal permeability with lactulose/mannitol: gum chewing is a potential confounding factor. [electronic resource] - The American journal of gastroenterology Aug 2001 - 2515-6 p. digital Publication Type: Letter ISSN: 0002-9270 Standard No.: 10.1111/j.1572-0241.2001.04075.x doi Subjects--Topical Terms: Chewing Gum--adverse effectsHumansIntestinal AbsorptionLactulose--urineMannitol--pharmacokinetics