Randomised, double-blind, placebo-controlled trial of fructo-oligosaccharides in active Crohn's disease - Benjamin,JL; Hedin,CRH; Koutsoumpas,A; Ng,SC; McCarthy,NE; Hart,AL; Kamm,MA; Sanderson,JD; Knight,SC; Forbes,A; Stagg,AJ; Whelan,K; et al. (GUT, 2011)