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Preussmann, R

For example, a cross-sectional study of young people found that e-cigarette users had significantly reduced spirometric lung volumes: average FEV was only about 3.0 liters in vapers versus 3.5 liters in non-smokers, and mean FVC was 4.0 L in vapers versus 4.6 L in non-users (76) (Figure 3)
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As such, the task force recommends strongly in favour of these behavioural interventions, which demonstrated at least a small but important benefit for smoking cessation
