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5. Analysis of multiple sugar probes in urine and plasma by high-performance anionexchange chromatography with pulsed electrochemical detection. Application in the assessment of intestinal permeability in human immunodeficiency virus infection;Fleming, S.C.; Kynaston, J.A.; Laker, M.F.; Pearson, A.D.; Kapembwa, M.S.; Griffin, G.E.;J Chromatogr,1993