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In summary, nicotine is the active compound, while cotinine is a byproduct of nicotine metabolism that serves as an indicator of nicotine exposure

The Chinese government explained that the removal of the nicotine-containing language here is to include e-cigarettes that do not contain nicotine in the definition of e-cigarettes

Concerns about bias apply to any study of an environmental agent and disease risk: misclassification of exposures or outcomes, confounding effect modification, and proper selection of study participants

Its now a national strategy

This was a moment of realization like, Why do we have to write Cage The Elephant songs