1. World Health Organization. Prevention of Cancer (WHO, Geneva, 1964).
2. Doll, R. Prevention of Cancer — Pointers from Epidemiology (Nuffield Hospital Trust, London, 1967).
3. Wynder, E. L. & Gori, G. B. Contribution of the environment to cancer incidence: an epidemiologic exercise. J. Natl Cancer Inst. 58, 825–832 (1977).
4. Higginson, J. & Muir, C. S. Environmental carcinogenesis: misconceptions and limitations to cancer control. J. Natl Cancer Inst. 63, 1291–1298 (1979).
5. Doll, R. & Peto, R. The Causes of Cancer: Quantitative Estimates of Avoidable Risks of Cancer in the United States Today (Oxford University Press, New York, 1981).