1. Clinical Epidemiology. The Architecture of Clinical Research;Feinstein, A.R.,1985
2. Calculating confidence intervals for relative risks (odds ratios) and standardised ratios and rates;Morris, J.; Gardner, M.;Br MedJ,1988
3. Statistical Methods in Cancer Research Vol I-The Analysis of case-control studies. IARC Publication no 32;Breslow, N.E.; Day, N.E.,1980
4. Clinical Epidemiology. A Sciencefor Clinical Medicine;Sackett, D.; Haynes, R.B.; Tugwell, P.,1985
5. Antiplatelet trialists collaboration. Secondary prevention of vascular disease by prolonged antiplatelet treatment;Br Med J,1988