No abstract available
MeSH terms
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Adult
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Cotinine / analysis
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Female
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Follow-Up Studies
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Humans
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Male
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Middle Aged
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Nicotine / administration & dosage*
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Saliva / chemistry
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Smoking / epidemiology*
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Smoking Cessation / methods*
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Smoking Prevention
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Surveys and Questionnaires
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Time Factors
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Tobacco Use Cessation Devices*