https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10163269/?fbclid=IwAR2ftvFV6mySHe3HmGPMsJK_N1IJp-IWltXYpcYN27cp3OyjLnbbgEoYyHE
https://www.miragenews.com/e-cigarettes-are-more-effective-than-nicotine-898032/
https://www.centerfreeeconomy.org/post/coalition-letter-to-fda-commissioner-robert-m-califf-m-d
https://www.adamsmith.org/research/2-million-years-of-life-how-safer-smoking-alternatives-can-level-up-health-and-tackle-the-cost-of-living-crisis
https://www.tampabay.com/news/health/study-finds-nicotine-safe-helps-in-alzheimers-parkinsons/2175396/?template=amp