Authors: F L Wolters; M G Russel; J Sijbrandij; T Ambergen; S Odes; L Riis; E Langholz; P Politi; A Qasim; I Koutroubakis; E Tsianos; S Vermeire; J Freitas; G van Zeijl; O Hoie; T Bernklev; M Beltrami; D Rodriguez; R W Stockbrügger; B Moum Journal: Gut Date: 2005-12-16 Impact factor: 23.059