Authors: H Tilg; C van Montfrans; A van den Ende; A Kaser; S J H van Deventer; S Schreiber; M Gregor; O Ludwiczek; P Rutgeerts; C Gasche; J C Koningsberger; L Abreu; I Kuhn; M Cohard; A LeBeaut; P Grint; G Weiss Journal: Gut Date: 2002-02 Impact factor: 23.059