Authors: Thomas Walcher; Mark M Haenle; Martina Kron; Birgit Hay; Richard A Mason; Daniel Walcher; Gerald Steinbach; Peter Kern; Isolde Piechotowski; Guido Adler; Bernhard O Boehm; Wolfgang Koenig; Wolfgang Kratzer Journal: BMC Gastroenterol Date: 2009-10-08 Impact factor: 3.067