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Helen (University of California San Francisco, USA), for critical review of the manuscript and Tyson Douglass (University of California San Francisco, USA) for editorial assistance

These e-cigarettes are available in a wide variety of flavors and nicotine levels , and offer a quick and easy vaping experience

The key to figuring out if they are trying to say yes or no is to simply focus on the last word

They heat an e-liquid that often contains nicotine to produce a nicotine-containing aerosol, which people usually call a vaporhence the term vaping

This new law increases the minimum age of sale to 21 and includes all tobacco products including non-combustible tobacco products, e-cigarette devices, and e-liquid