Name	Info	Provider	Link
E-Cigarettes	free resource	MedlinePlus Health Information	https://medlineplus.gov/ecigarettes.html
	free resource	Nature Publishing Group	https://doi.org/10.1038/s41598-020-76610-4
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/33235307/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/33235307