Authors: W L Peterson; R A Sturdevant; H D Frankl; C T Richardson; J I Isenberg; J D Elashoff; J Q Sones; R A Gross; R W McCallum; J S Fordtran Journal: N Engl J Med Date: 1977-08-18 Impact factor: 91.245
Authors: H J Binder; A Cocco; R J Crossley; W Finkelstein; R Font; G Friedman; J Groarke; W Hughes; A F Johnson; J E McGuigan; R Summers; R Vlahcevic; E C Wilson; D H Winship Journal: Gastroenterology Date: 1978-02 Impact factor: 22.682