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The researchers, whose work was published earlier this year in the Journal of Clinical Oncology, suggest switching instead to a simple measure that would recommend annual screening for anyone whos smoked for 20 years, regardless of how many cigarettes they smoke a day

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Carl Dernehl, the companys former toxicologist, tried to focus on cigarette smoking as the primary cause of cancer, not asbestos exposure in this statement: It has been demonstrated that asbestos workers in the United States apparently do not develop cancer of the lung unless they also smoke cigarettes

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