title: Appropriateness of upper gastrointestinal endoscopy: are there geographic differences?
authors.forename: V F
authors.initials: VF
authors.lastname: Eckardt
authors.forename: G
authors.initials: G
authors.lastname: Kanzler
mesh_terms: D003362:Cost-Benefit Analysis; D016099:Endoscopy, Gastrointestinal / Q000191:economics*; D005060:Europe; D006801:Humans; D014481:United States