
Keywords: مهار کننده پمپ پروتون; CI; confidence interval; H2RA; histamine-2 receptor antagonist; PPI; proton pump inhibitor; SIR; standardised incidence ratio; Gastrointestinal neoplasms; Esophageal neoplasms; Gastroesophageal reflux; Gastric acid; Proton pump inhibitors;