title: Upper intestinal endoscopy.
authors.forename: M L
authors.initials: ML
authors.lastname: Clark
mesh_terms: D003365:Costs and Cost Analysis; D004064:Digestive System; D004724:Endoscopy / Q000191:economics / Q000706:statistics & numerical data*; D006300:Health Services Misuse / Q000191:economics; D006801:Humans; D013222:State Medicine; D006113:United Kingdom