Army Captain William Krueger studies CT scans at the National Naval Medical Center in Bethesda, Md. CWO4 SETH ROSSMAN/NAVY VISUAL NEWS SERVICE hide caption

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CT Scans Modestly Cut Deaths Of Smokers In Study
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National smoking rates haven't budged. But a better job in some states gives anti-smoking advocates hope that progress can still be made. Joe Raedle/Getty Images North America hide caption

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