title: Helicobacter pylori: a diagnostic dilemma and a dilemma of diagnosis.
authors.forename: D A
authors.initials: DA
authors.lastname: Peura
mesh_terms: D000328:Adult; D000368:Aged; D000907:Antibodies, Bacterial / Q000032:analysis; D001706:Biopsy; D001944:Breath Tests; D004796:Clinical Enzyme Tests; D016481:Helicobacter Infections / Q000175:diagnosis* / Q000276:immunology; D016480:Helicobacter pylori / Q000276:immunology; D006801:Humans; D008875:Middle Aged; D014508:Urea / Q000032:analysis; D014510:Urease / Q000032:analysis
chemical_list: D000907:Antibodies, Bacterial; D014508:Urea; D014510:Urease