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- - National Insitute on Drug Abuse, Vaping Devices | https://www.drugabuse.gov/
publications/drugfacts/ electronic-cigarettes-e- cigarettes
- - National Institute of Environmental Health Science, Vaping and Health: What Do We Know about E-Cigarettes? | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154203/
American Thoracic Society
- - Why do I smoke and why do I keep smoking? https://www.thoracic.org/patients/patient-resources/resources/why-do-i-smoke.pdf
- - Outdoor air pollution and your health https://www.thoracic.org/patients/patient-resources/resources/outdoor-air-pollution.pdf