symptoms of smoking fake tobacco The Many Dangers Use The F.D.A.'s New Cigarette Warnings
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For heavy, long-term smokers, it may remain detectable for a week or slightly longer

High levels of nicotine have even been found in cervical mucus contributing to cervical cancer [11]
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(2009a)

Because of the long half-life of cotinine it has been used as a biomarker for daily intake, both in cigarette smokers and in those exposed to secondhand tobacco smoke (Benowitz 1996)
