In terms of the data collection, it was sometimes challenging to recruit young adult smokers to participate in the FG discussions in Mexico, and as a result, two of the focus groups were very small
Others use smoke and scent as a protective or cleansing force
Phase II : The metabolites are converted into water-soluble substances (by COMT, UGTs) for elimination
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But the people who opted for electronic cigarettes were not the same as other smokers, so the researchers controlled for factors like age, gender, socioeconomic status and the degree of their nicotine dependence