Name	Info	Provider	Link
Environmental Health	free resource	MedlinePlus Health Information	https://medlineplus.gov/environmentalhealth.html
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=20531097.ui
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/20531097/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/20531097
	subscription/membership/fee required	Wolters Kluwer	https://dx.doi.org/10.1097/FCH.0b013e3181e4bcd8