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: Lucia Pacifico; John Frederick Osborn; Enea Bonci; Sara Romaggioli; Rossella Baldini; Claudio Chiesa Journal: World J Gastroenterol Date: 2014-01-21 Impact factor: 5.742