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2. Early endoscopy of oesophagus, stomach and duodenal bulb in patients with haematemesis and melaena;Cotton, P.B.; Rosenberg, M.T.; Waldrom, R.P.L.; Axon, A.T.R.;Br MedJ,1973
3. Comparative study between endoscopy and radiology in acute upper gastrointestinal haemorrhage;Hoare, A.M.,1975
4. Prospective comparison of doublecontrast barium meal examination and fibreoptic endoscopy in acute upper gastrointestinal haemorrhage. Br Med3';Stevenson, G.W.; Cox, R.R.; Roberts, C.J.C.,1976
5. A comparison of routine and selective endoscopy in the management of acute gastrointestinal hemorrhage;Allan, R.; Dykes, P.;Gastrointest Endosc,1974