Authors: S Brearley; P C Hawker; N J Dorricott; J R Lee; N S Ambrose; S H Silverman; P W Dykes; M R Keighley Journal: Ann R Coll Surg Engl Date: 1986-09 Impact factor: 1.891
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: J N Thompson; R R Salem; A P Hemingway; H C Rees; H J Hodgson; C B Wood; D J Allison; J Spencer Journal: Gut Date: 1987-01 Impact factor: 23.059