Authors: D Vaira; C D'Anastasio; J Holton; J F Dowsett; M Londei; F Bertoni; E Beltrandi; P Grauenfels; P R Salmon; L Gandolfi Journal: Lancet Date: 1988-09-24 Impact factor: 79.321
Authors: W L Peterson; D Y Graham; B Marshall; M J Blaser; R M Genta; P D Klein; C W Stratton; J Drnec; P Prokocimer; N Siepman Journal: Am J Gastroenterol Date: 1993-11 Impact factor: 10.864