1. E-cigarette unit sales, by product and flavor type — United States, 2014–2020;Ali;Morb Mortal Wkly Rep,2020
2. Trends in various e-cigarette devices used by high school adolescents from 2017–2019;Bold;Drug Alcohol Depend,2021
3. Evidence of nicotine dependence in adolescents who use JUUL and similar pod devices;Boykan;Int J Environ Res Public Health,2019
4. CDC Foundation. (2021, June 2021). Monitoring U.S. e-cigarette sales: National trends. Retrieved from https://www.cdcfoundation.org/National-E-CigaretteSales-DataBrief-2021-June21?inline#:∼:text=Key%20Findings,2020%20to%20June%2013%2C%202021.
5. Centers for Disease Control and Prevention. (2021). E-cigarette, or vaping, products visual dictionary. Retrieved from https://www.cdc.gov/tobacco/basic_information/e-cigarettes/pdfs/ecigarette-or-vaping-products-visual-dictionary-508.pdf.