1. World Health Organization. WHO global report on trends in prevalence of tobacco use 2000–2025, fourth edition. Geneva: World Health Organization; 2021.
2. Korea Centers for Disease Control and Prevention. Korea Health Statistics 2020: Korea National Health and Nutrition Examination Survey (KNHANES VIII-2). Chengju: Korea Centers for Disease Control and Prevention; 2021.
3. World Health Organization. WHO Framework Convention on Tobacco Control. Geneva: World Health Organization; 2003.
4. World Health Organization. MPOWER: a policy package to reverse the tobacco epidemic. Geneva: World Health Organization; 2008.
5. World Health Organization. WHO report on the global tobacco epidemic 2021: addressing new and emerging products. Geneva: World Health Organization; 2021.