size of cigarette smoke particles particle and spatial distributions. (a) Nano-scale Mainstream cigarette smoke particle size

Statistical analyses Using microdata of each country, weighted prevalence estimates (%) and their 95% confidence intervals (95% CI) were estimated for awareness, ever e-cigarette use, current e-cigarette use, and dual use

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The WHO reports that secondhand smoke exposure causes approximately 1.6 million premature deaths annually, including an estimated 1.6 million non-smokers exposed to second-hand smoke

These surveys are both a little old, though, before the explosion in sub-ohm tanks