1. Effect of different operation policies on mortality from bleeding peptic ulcer;Dronfield, M.W.; Atkinson, M.; Langman, M.J.S.;Lancet,1979
2. Haematemesis and melaena with special reference to factors influencing the outcome;Schiller, K.F.R.; Truelove, S.C.; Williams, D.G.;Br Med J,1970
3. The late results of medical and surgical treatment for bleeding duodenal ulcer;Langman, M.J.S.; Harvey, R.F.;Q J Med,1970
4. A study of the factors influencing mortality rates from gastrointestinal haemorrhage;Allan, R.; Dykes, P.;Q Y Med,1976
5. Accepted,1981