drawing of pack of cigarettes in a packet isolated on a white background vector line art Cigarette pack vector drawing. Opened

Many factors contributed to the public change in attitude towards smoking and it is clear that it takes time not only to change the public perception but also government policies, particularly considering the lobbying power of big business

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[MAP] The toilets, the tap water and the local attitude toward stray dogs might be highly questionable, but theres one advantage to hanging out in Sochi, Russia -- if youre a smoker

* Correspondence: Tianyuan Guan, [email protected] Disclaimer All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers