1. Deaths from peptic ulceration;Taylor, T.V.;Br Med J,1985
2. Natural history of duodenal ulcer;Hirschowitz, B.I.;Gastroenterology,1983
3. What has happened to perforated peptic ulcer?;Watkins, R.M.; Dennison, A.R.; Collin, J.;BrJ Surg,1984
4. years of hospital admissions for peptic ulcer in England and Wales;Coggon, D.; Lambert, P.; Langman, M.J.S.;Lancet,1981
5. Surgical treatment of peptic ulcer in the United States. Trends before and after the introduction of cimetidine;Fineberg, H.V.; Pearlman, L.A.;Lancet,1981