Authors: P B Cotton; G Lehman; J Vennes; J E Geenen; R C Russell; W C Meyers; C Liguory; N Nickl Journal: Gastrointest Endosc Date: 1991 May-Jun Impact factor: 9.427
Authors: J M Sternlieb; C A Aronchick; J N Retig; M Dabezies; F Saunders; E Goosenberg; A Infantolino; S Ionna; G Maislin; S H Wright Journal: Am J Gastroenterol Date: 1992-11 Impact factor: 10.864