1. The relationship of smoking and some social covariables to mortality and cancer morbidity;Cederlof, R.; Friberg, L.; Hrubec, Z.; Lorich, U.,1975
2. Health and Welfare. A Canadian study of smoking and health;Department of National,1966
3. A study of the aetiology of carcinoma of the lung;Doll, R.; Hill, A.B.;Br Med J,1952
4. Mortality of British doctors in relation to smoking: observations on coronary thrombosis;Doll, R.; Hill, A.B.;Natl Cancer Inst Monogr,1966
5. Smoking in relation to the death rates of one million men and women: epidemiological study of cancer and other chronic diseases;Hammond, E.C.;Natl Cancer Inst Monogr,1966