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Previous Volume 330:1684-1685 June 9, 1994 Number 23 Next

	Since this article has no abstract, we have provided an extract of the first 100 words of the full text and any section headings.

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To the Editor: Pershagen et al. (Jan. 20 issue)¹ were thorough in their measurements of radon exposure, but the incidence of smoking that they reported may have been seriously underestimated. If so, the relative risk of lung cancer associated with radon exposure would have been lower than they reported. The source of their underestimation of the incidence of smoking is the likely systematic underreporting of smoking when incidence is assessed by methods similar to those used in the Pershagen study. Smokers in the United States report only two thirds to three quarters of their actual use of tobacco². Another . . . [Full Text of this Article]

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