how long has tobacco been around History of Tobacco: A Lucrative Vice World No Tobacco Day 2020:

While previous research has often focused on vaping as a gateway to smoking, this study shifts attention to vaping as a direct carcinogenic exposure

In New York, he stayed at the Waldorf-Astoria Hotel with fellow survivor Alfons Simonius-Blumer Staehelin

For example, while we emphasize the importance of considering pack years to estimate cigarette smoke exposure, we recognize the potential for unmeasured confounding that is not captured by pack years, which has been shown to be an imperfect measure of overall cigarette smoking history

She showed conditional hospitality, tossing half glances to visitors and co-workers