• 2 Cancer
• 2 Lungs
• 2 Physiological effect
• 2 Tobacco
• 1 Drug withdrawal symptoms
• 1 Health and hygiene
• 1 Information services
• 1 National Cancer Institute (U.S.)
• 1 Nicotine addiction
• 1 Older people
• 1 Tobacco use
• 1 Treatment

• 1 American Cancer Society
• 1 Fiore, Michael
• 1 UnitedHealth Foundation

• 2 English

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