Name	Info	Provider	Link
	free resource	BioMed Central	https://bmccancer.biomedcentral.com/articles/10.1186/1471-2407-6-139
Secondhand Smoke	free resource	MedlinePlus Health Information	https://medlineplus.gov/secondhandsmoke.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/16729889/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/16729889