Name	Info	Provider	Link
	free resource	Hindawi Limited	https://doi.org/10.1155/2015/745865
Quitting Smoking	free resource	MedlinePlus Health Information	https://medlineplus.gov/quittingsmoking.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/26273642/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/26273642
	free resource	scite Smart Citations	https://scite.ai/reports/26273642
	free resource	Spiral, Imperial College Digital Repository	http://hdl.handle.net/10044/1/41402