| the changing histological pattern of gastric polyps in an ethnically heterogeneous population. | variation in the prevalence of various types of gastric polyps worldwide may reflect different etiologies. here, the authors report the dynamic changes in histological distribution of gastric polyps over time and by ethnicity for individuals who underwent gastroscopies between 1994 and 2009 at two hospitals in jerusalem, israel. during this time period, the proportion of patients receiving proton pump inhibitors (ppis) increased while the proportion of patients infected with helicobacter pylori ... | 2012 | 22577830 |