1. Aspirin, paracetamol and haematemesis and melaena;Coggan, D.; Langman, M.J.S.; Spiegelhalter, D.;Gut,1982
2. Non-steroidal antiinflammatory drugs and peptic ulcer perforation;Collier, D.S.; Pain, J.A.;Gut,1985
3. Non-steroidal anti-inflammatory drugs and bleeding peptic ulcer;Somerville, K.W.; Faulkner, G.; Langman, M.J.S.;Lancet,1986
4. Non-steroidal anti-inflammatory drugs and bleeding peptic ulcer;Walt, R.P.; Katchinski, B.; Faulkner, G.; Logan, R.F.A.; Langman, M.J.S.;Lancet,1986
5. Peptic ulcer complications and non-steroidal antiinflammatory drugs;Armstrong, C.P.; Blower, A.L.,1986