Abstract
Tar (and nicotine) content of cigarettes has decreased in developed countries for the past five decades, as measured by the Federal Trade Commission method, which ignores the qualitative nature of tar. This decrease seems, credibly, to have contributed partly to the decline in total lung-cancer mortality in men 1 Stellman SD Garfinkel L Lung cancer risk is proportional to cigarette tar yield: evidence from a prospective study. Prev Med. 1989; 18: 518-525 Crossref PubMed Scopus (41) Google Scholar in these countries.
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