title: Is Helicobacter pylori-negative duodenal ulcer masked by the high prevalence of H. pylori infection in the general population?
authors.forename: K
authors.initials: K
authors.lastname: Higuchi
authors.forename: T
authors.initials: T
authors.lastname: Arakawa
authors.forename: Y
authors.initials: Y
authors.lastname: Fujiwara
authors.forename: T
authors.initials: T
authors.lastname: Uchida
authors.forename: K
authors.initials: K
authors.lastname: Tominaga
authors.forename: T
authors.initials: T
authors.lastname: Watanabe
authors.forename: T
authors.initials: T
authors.lastname: Kuroki
mesh_terms: D000328:Adult; D000368:Aged; D004381:Duodenal Ulcer / Q000453:epidemiology / Q000382:microbiology*; D005260:Female; D016481:Helicobacter Infections / Q000453:epidemiology*; D016480:Helicobacter pylori; D006801:Humans; D007564:Japan / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D014481:United States