1. The smoking habit and its classification;Russell;Practitioner,1974
2. Tobacco smoking and longevity;Pearl;Science,1938
3. Mortality in relation to smoking: 20 years' observations on male British doctors;Doll;Br Med J,1976
4. The health consequences of smoking: cardiovascular disease: a report of the Surgeon General, 1983;U.S Surgeon General,1983
5. Trends in mortality among California physicians after giving up smoking: 1950–1979;Enstrom;Br Med J,1983