No abstract available
Publication types
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Age Factors
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Health Education / methods
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Humans
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Physician's Role
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Prevalence
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Smoking / adverse effects
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Smoking / epidemiology*
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Smoking Cessation* / statistics & numerical data
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Smoking Prevention
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Time Factors
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United States / epidemiology