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A population-based, case-control study of incident lung cancer among women in Missouri (United States) who were lifetime nonsmokers and long-term exsmokers was conducted between 1986 and 1992. The study included 538 lung cancer cases and 1183 population-based, age matched controls. Information on lung cancer risk factors was obtained by interviewing cases, next-of-kin of cases, and controls. Year-long...
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