Name	Info	Provider	Link
	free resource	BioMed Central	https://clinicalepigeneticsjournal.biomedcentral.com/articles/10.1186/s13148-019-0647-8
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/30867047/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/30867047