https://www.ada.org/en/publications/ada-news/2019-archive/december/ada-announces-interim-policy-on-vaping?utm_source=facebook&utm_medium=paid&utm_campaign=rapidresponse&fbclid=IwAR1JvVQjeUaOWwmSt9b5pOC_XGqN3PTnEj2L5rdmzMCC8Ky2h-WjouzE-sA
https://www.ada.org/en/press-room/news-releases/2019-archives/october/american-dental-association-statement-on-vaping?fbclid=IwAR04s4HEcstBaTYSRgYIv1B65_T6ydZS9Jcj9WTV0bjXCqCdA02Xb9vjw7o
https://www.sciencedaily.com/releases/2016/11/161116101821.htm
http://www.dailymail.co.uk/health/article-3663839/E-cigarettes-toxic-mouth-Vaping-kills-cells-oral-cavity-raising-risk-disease.html#utm_sguid=160550,d5d8d5fb-538c-98f2-1a32-db450ce80215