Authors: D Kaufmann; C H Wilder-Smith; M Kempf; J Neumann; H Schmolls; L Witzel; R P Walt; J Röhmel; H S Merki Journal: Dig Dis Sci Date: 1990-12 Impact factor: 3.199
Authors: P Bauerfeind; T Cilluffo; C J Fimmel; C Emde; C von Ritter; W Kohler; R Gugler; T Gasser; A L Blum Journal: Gut Date: 1987-05 Impact factor: 23.059