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Screening smokers may save lives

Lung cancer screening may save heavy smokers' lives. CNN's Dr. Sanjay Gupta reports.

Mon Jul 29, 2013 @ 5:00:39 pm ET via CNN Video
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I’m a father of three, a practicing neurosurgeon, and a globe-trotting journalist. Join me as I go beyond the headlines, and offer insight to stories that shape the quality of life for you and your family. FULL BIO

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