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Voskuijl, W., F. de Lorijn, W. Verwijs, P. Hogeman, J. Heijmans, W. Mäkel, J. Taminiau, a M. Benninga. PEG 3350 (Transipeg) Versus Lactulose in the Treatment of Childhood Functional Constipation: A Double Blind, Randomised, Controlled, Multicentre Trial. Copyright 2004 by Gut, 2004.

Voskuijl, W., et al. PEG 3350 (Transipeg) Versus Lactulose in the Treatment of Childhood Functional Constipation: A Double Blind, Randomised, Controlled, Multicentre Trial. Copyright 2004 by Gut, 2004.