1. A report of the Surgeon General. The health consequences of smoking, chronic obstructive lung disease. U.S. Department of Health and Human Services, 1984.
2. Health Effects of Involuntary Smoking
3. Royal College of Physicians. Smoking and the young. London: Royal College of Physicians, 1992.
4. eds. Effects of smoking on the fetus, neonate and child. Oxford: Oxford University Press, 1992.
5. Recent advanc;Couriel,1993