BACKGROUND : Helicobacter pylori infection is primarily acquired in early childhood. Its transmission routes are debated. The aims of this study were to determine the seroprevalence of anti-H. https://fyzozbed8faw7.blog-kids.com/35125820/analysis-on-the-imbalance-of-population-flow-network-during-the-spring-festival-travel-rush-in-china-in-2015