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: E J Ramsey; K V Carey; W L Peterson; J J Jackson; F K Murphy; N W Read; K B Taylor; J S Trier; J S Fordtran Journal: Gastroenterology Date: 1979-06 Impact factor: 22.682