Authors: P Malfertheiner; F Megraud; C O'Morain; F Bazzoli; E El-Omar; D Graham; R Hunt; T Rokkas; N Vakil; E J Kuipers Journal: Gut Date: 2006-12-14 Impact factor: 23.059
Authors: D Y Graham; G M Lew; H M Malaty; D G Evans; D J Evans; P D Klein; L C Alpert; R M Genta Journal: Gastroenterology Date: 1992-02 Impact factor: 22.682