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Cigarette - Wikipedia
Cigarettes | FDA - U.S. Food and Drug Administration
Health Effects of Cigarette Smoking | CDC
What's In a Cigarette? | American Lung Association
Cigarette | Definition, Facts, & Health Effects | Britannica
What's in a Cigarette? And Other FAQs - Healthline
Current Cigarette Smoking Among Adults in the United States
Fast Facts and Fact Sheets | Smoking and Tobacco Use | CDC
Chemicals in Tobacco Products and Your Health | FDA
What Are Cigarettes? - Verywell Mind