| molecular epidemiology of helicobacter pylori infection in nepal: specific ancestor root. | prevalence of helicobacter pylori infection in nepal, a low-risk country for gastric cancer, is debatable. to our knowledge, no studies have examined h. pylori virulence factors in nepal. we determined the prevalence of h. pylori infection by using three different tests, and the genotypes of virulence factors were determined by pcr followed by sequencing. multilocus sequence typing was used to analyze the population structure of the nepalese strains. the prevalence of h. pylori infection in dysp ... | 2015 | 26226153 |