title: Helicobacter pylori: its epidemiology and its role in duodenal ulcer disease.
authors.affiliation: Department of Medicine, Veterans Affairs Medical Center, Houston, TX 77030.
authors.forename: D Y
authors.initials: DY
authors.lastname: Graham
mesh_terms: D004381:Duodenal Ulcer / Q000453:epidemiology / Q000382:microbiology*; D005756:Gastritis / Q000453:epidemiology; D016481:Helicobacter Infections / Q000453:epidemiology*; D016480:Helicobacter pylori; D006801:Humans; D011051:Poliomyelitis / Q000453:epidemiology; D015995:Prevalence; D013274:Stomach Neoplasms / Q000453:epidemiology