Authors: Peter Piringer; Robert Buder; Fritz Firlinger; Christine Kapral; Christian Luft; Wolfgang Sega; Friedrich Wewalka; Kurt Lenz Journal: Wien Klin Wochenschr Date: 2007 Impact factor: 1.704
Authors: Steven F Solga; Gillian Buckley; Jeanne M Clark; Alena Horska; Anna Mae Diehl Journal: J Clin Gastroenterol Date: 2008 Nov-Dec Impact factor: 3.062