character: C. Everett Koop
topic: Impact of smoking on public health and epidemiological research
grade: 9
subject: History
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character: Richard Doll
topic: Pioneering studies in smoking statistics and lung cancer
grade: 9
subject: History
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character: Centers for Disease Control and Prevention (CDC)
topic: Role of health organizations in smoking prevention and control
grade: 9
subject: History
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character: World Health Organization (WHO)
topic: Global efforts and statistics related to smoking and health risks
grade: 9
subject: History
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