1. The Tobacco Atlas, Prevalence. American Cancer Society & World Lung Foundation; 2022. Available from: https://tobaccoatlas.org/challenges/prevalence/.
2. A report of the Surgeon General: The Health Consequences of Smoking—50 Years of Progress. 2014. US Department of Health and Human Services PHS, Office of the Surgeon General, MD. Accessible from https://www.surgeongeneral.gov/library/reports/50-years-of-progress/full-report.pdf.