J. Morrison, G. M. Williams, J. M. Najman, M. J. Andersen, J. D. Keeping, Birthweight below the Tenth Percentile: The Relative and Attributable Risks of Maternal Tobacco Consumption and Other Factors, Environmental Health Perspectives, Vol. 101, Supplement 3: Environmental Mutagenesis in Human Populations at Risk (Oct., 1993), pp. 275-277
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Morrison et al. (1993) studied this question.