Authors: R L Protell; C E Rubin; D C Auth; F E Silverstein; F Terou; M Dennis; J R Piercey Journal: Gastroenterology Date: 1978-02 Impact factor: 22.682
Authors: R M Walsh; P Anain; M Geisinger; D Vogt; J Mayes; S Grundfest-Broniatowski; J M Henderson Journal: J Gastrointest Surg Date: 1999 Jan-Feb Impact factor: 3.452