Authors: Peter Witters; Geert Maleux; Christophe George; Marion Delcroix; Ilse Hoffman; Marc Gewillig; Chris Verslype; Diethard Monbaliu; Raymond Aerts; Jacques Pirenne; Werner Van Steenbergen; Frederik Nevens; Johan Fevery; David Cassiman Journal: J Gastroenterol Hepatol Date: 2007-09-14 Impact factor: 4.029