1. An assessment of the augmented histamine test in the diagnosis of peptic ulcer. Correlations between gastric secretion, age and sex of patients and site and nature of the ulcer;Baron, J.H.,1963
2. Effect of smoking on the production and maintenance of gastric and duodenal ulcers. Lancet 1958; 1: 657-62. It is noted that, as expected, the strengths of associations found in the three study periods were highly correlated. This finding may reduce the likelihood that response was distorted by recall bias due to time sequences. Such a problem is very real in historical studies which require memory recall over several years. This is especially so where members of a disease group may have a landmark by which to remember activities related to health -;Doll, R.; Jones, F.A.; Pygott, F.
3. Gastric ulcer, duodenal ulcer and gastric carcinoma: a case control study of certain social and environmental factors;Gillies, M.; Skyring, A.;Med JAust,1968
4. Environmental factors and chronic gastric ulcer: a case control study of the association of smoking, alcohol and heavy analgesic ingestion with the exacerbation of chronic gastric ulcer;Piper, D.W.; McIntosh, J.H.; Greig, M.; Shy, C.M.;Scand J Gastroenterol,1982
5. Aspirin and gastric;Cameron, A.J.,1975