Helicobacter pylori and nonulcer dyspepsia.
D015986:Confounding Factors, Epidemiologic; D004415:Dyspepsia / Q000188:drug therapy* / Q000382:microbiology; D016099:Endoscopy, Gastrointestinal; D016481:Helicobacter Infections / Q000188:drug therapy*; D016480:Helicobacter pylori; D006801:Humans; D010437:Peptic Ulcer / Q000175:diagnosis*