Authors: R H Wiesner; J Ludwig; K D Lindor; R A Jorgensen; W P Baldus; H A Homburger; E R Dickson Journal: N Engl J Med Date: 1990-05-17 Impact factor: 91.245
Authors: J P Galmiche; B Fraitag; B Filoche; M Evreux; J Vitaux; P Zeitoun; J Fournet; J C Soule Journal: Dig Dis Sci Date: 1990-05 Impact factor: 3.199