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Staff J, Maggs JL, Seto C, Dillavou J, Vuolo M

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The aerosol (vapor) emitted by e-cigarettes and exhaled by users contains carcinogens, such as formaldehyde, according to early studies

Conditional recommendations Conditional recommendations are those for which the desirable effects probably outweigh the undesirable effects (conditional recommendation in favour of an intervention) or undesirable effects probably outweigh the desirable effects (conditional recommendation against an intervention) but appreciable uncertainty exists

Based on category, the market is segmented into open and closed