1. U.S. Department of Health Education and Welfare:Smoking and Health. A Report of the Surgeon General. Rockville, MD: Office on Smoking and Health, Public Health Service, 1979, Pp.I-10?I-28.
2. U.S. Department of Health and Human Services:Reducing the Health Consequences of Smoking. Twenty-Five Years of Progress. A Report of the Surgeon General. Summary. Rockville, MD: Office on Smoking and Health, Public Health Service, 1989. [Full report available July 1989.]
3. American Cancer Society:1985 Cancer Facts and Figures. New York, 1985.
4. U.S. Department of Health and Human Services:The Health Consequences of Smoking: Cardiovascular Disease. A Report of the Surgeon General. Rockville, MD: Office on Smoking and Health, Public Health Service, 1983, Pp.6?11.
5. U.S. Department of Health and Human Services:The Health Consequences of Smoking: Cancer. A Report of the Surgeon General. Rockville, MD: Office on Smoking and Health, Public Health Service, 1982, Pp.5?8, 15.