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Our finding from Table 1 is consistent with a well-known evidence that the poor tends to smoke more than the rich in low- and middle-income countries [39]

Informal peer education, peer-led discussions, and supportive social networks can foster collective resistance to smoking, an approach supported by evidence from both high- and low-income countries (86)

will play right into the hands of the CJNG and other violent Mexican cartels

17% reported acquiring products only from informal sources

But a potential trade-off is that there is a risk it may lead to fewer people switching from smoking to vaping, say the researchers