title: Underestimation of Helicobacter pylori infection rate by biopsy urea broth test.
authors.forename: C K
authors.initials: CK
authors.lastname: Ching
mesh_terms: D001706:Biopsy / Q000379:methods; D004415:Dyspepsia / Q000453:epidemiology*; D016481:Helicobacter Infections / Q000453:epidemiology*; D016480:Helicobacter pylori / Q000302:isolation & purification*; D006801:Humans; D011237:Predictive Value of Tests; D015995:Prevalence; D012680:Sensitivity and Specificity