Authors: A J Wakefield; E A Sankey; A P Dhillon; A M Sawyerr; L More; R Sim; R M Pittilo; P M Rowles; M Hudson; A A Lewis Journal: Gastroenterology Date: 1991-05 Impact factor: 22.682
Authors: P Rutgeerts; K Geboes; G Vantrappen; J Van Isveldt; M Peeters; F Penninckx; M Hiele Journal: J Clin Gastroenterol Date: 1992-07 Impact factor: 3.062