Authors: E Christensen; J Neuberger; J Crowe; D G Altman; H Popper; B Portmann; D Doniach; L Ranek; N Tygstrup; R Williams Journal: Gastroenterology Date: 1985-11 Impact factor: 22.682
Authors: M M Kaplan; D W Alling; H J Zimmerman; H J Wolfe; R A Sepersky; G S Hirsch; G H Elta; K A Glick; K A Eagen Journal: N Engl J Med Date: 1986-12-04 Impact factor: 91.245