The use and abuse of upper digestive endoscopy.
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Centre for Digestive Diseases, General Infirmary at Leeds, UK.
D016145:Endoscopy, Digestive System / Q000191:economics / Q000706:statistics & numerical data* / Q000639:trends; D006801:Humans; D008403:Mass Screening / Q000379:methods*; D018579:Patient Selection; D006113:United Kingdom; D016526:Workload