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Screening is generally recommended for those who: Are between 50 and 80 years old, AND Have a 20-pack years smoking history, AND Currently smoke or quit smoking within the past 15 years Ultimately, stopping smoking can save your life

[55] Thus, the particle size of the e-cigarette vapor can vary, due to the device used

For the other compounds, a discrepancy between animal and human data was detected (see discussion)

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In an editorial accompanying the new study, Esteve Fernndez, an associate professor of epidemiology at the University of Barcelona, and Simon Chapman, a professor of public health at the University of Sydney, argue that many real-world quitters fare better than those included in the review