1. Cigarette smoking and health;Mason;Am Rev Respir Dis,1985
2. The causes of cancer: quantitative estimates of avoidable risks of cancer in the United States today;Doll;J Natl Cancer Inst,1981
3. Smoking is a major risk factor for periodontitis;Haber;Curr Opin Periodontol,1994
4. USPHS. Smoking and health, a report of the Surgeon General. DHEW Publication No. 79-50066. 1979:1–5.
5. Tobacco consumption in the United States, 1880 to 1954;Milmore;Agric Econ Res,1956