title: Upper gastrointestinal endoscopy.
authors.forename: T
authors.initials: T
authors.lastname: Walley
mesh_terms: D002985:Clinical Protocols; D004415:Dyspepsia / Q000191:economics / Q000209:etiology*; D016099:Endoscopy, Gastrointestinal / Q000706:statistics & numerical data*; D016481:Helicobacter Infections / Q000175:diagnosis*; D016480:Helicobacter pylori; D006801:Humans