Letters to the Editor

Ames BN Gold LS “Too many rodent carcinogens: Mitogenesis increases mutagenesis.” Science 1990,249: 970–1.

Perera FP Rail DP Weinstein IB . “Carcinogenesis mechanisms: The debate continues” (letter) Science 1991; 252: 903–4.

Perera FP Boffetta P. “Perspectives on comparing risks of environmental carcinogens.” J. Natl Cancer Inst 1988; 80: 1282–93.

McDonald JC Liddell FDK Gibbs GW “Dust exposure and mortality in chrysotile mining, 1910–75.” Br J Ind Med 1980; 37: 11–24.

Seidman H Lilis R Selikoff IJ . “Short-term asbestos exposure and delayed cancer risk.” In Nieburgs HE (Ed.) Prevention and detection of cancer. Part 1, Prevention (pp. 943–60). New York, NY: Marcel Dekker, 1977.

Brown LM Pottern LM Blot WJ . “Lung Cancer in relation to environmental pollutants emitted from industrial sources.” Environmental Research 1984; 34: 250–61.

Pershagen G. “Lung cancer mortality among men living near an arsenic-emitting smelter.” Am J Epidemiol 1985; 122: 684–94.

Jedrychowski W Becher H Wahrendorf J Basa-Cierpialek Z. “A case-control study of lung cancer with special reference to the effect of air pollution in Poland.” J Epidemiol Community Health 1990; 44: 114–20.

National Research Council. “Environmental tobacco smoke.” Washington, DC: National Academy Press, 1986.