Authors: C Cuillière; P Ducrotté; F Zerbib; E H Metman; D de Looze; F Guillemot; H Hudziak; H Lamouliatte; J C Grimaud; A Ropert; M Dapoigny; R Bost; M Lémann; M A Bigard; P Denis; J L Auget; J P Galmiche; S Bruley des Varannes Journal: Gut Date: 1997-07 Impact factor: 23.059