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3. A prospective, randomised study of endoscopy and radiology in acute upper-gastrointestinal-tract bleeding. Dronfield MW, McIllmurray MB, Ferguson R, Atkinson M, Langman MJ. Lancet; 1977 Jun 04; 1(8023):1167-9. PubMed ID: 68272 [Abstract] [Full Text] [Related]