Authors: B P Wallner; R J Mattaliano; C Hession; R L Cate; R Tizard; L K Sinclair; C Foeller; E P Chow; J L Browing; K L Ramachandran Journal: Nature Date: 1986 Mar 6-12 Impact factor: 49.962
Authors: M Campieri; G A Lanfranchi; G Bazzocchi; C Brignola; F Sarti; G Franzin; A Battocchia; G Labo; P R Dal Monte Journal: Lancet Date: 1981-08-08 Impact factor: 79.321
Authors: R Bartolí; F Fernández-Bañares; E Navarro; E Castellà; J Mañé; M Alvarez; C Pastor; E Cabré; M A Gassull Journal: Gut Date: 2000-02 Impact factor: 23.059