1. US Department of Health and Human ServicesSurgeongeneral.gov2018-09-19WashingtonPreventing Tobacco Use Among Youth and Young Adults Fact Sheet
https://www.surgeongeneral.gov/library/reports/preventing-youth-tobacco-use/factsheet.html
2. World Health OrganizationWho.int2018-09-20GenevaWorld Health OrganizationPrevalence of tobacco smoking
http://www.who.int/gho/tobacco/use/en/
3. 21st-Century Hazards of Smoking and Benefits of Cessation in the United States
4. Use of Tobacco Cessation Treatments Among Young Adult Smokers: 2005 National Health Interview Survey