Does a relationship still exist between gastroesophageal reflux and Helicobacter pylori in patients with reflux symptoms? - Grande, Michele; Lisi, Giorgio; De Sanctis, Flavio; Esser, Alessia; Campanelli, Michela; Balassone, Valerio; Milito, Giovanni; Villa, Massimo (World Journal of Surgical Oncology, 2014)