Name	Info	Provider	Link
Heroin	free resource	MedlinePlus Health Information	https://medlineplus.gov/heroin.html
	subscription/membership/fee required	Wiley	https://onlinelibrary.wiley.com/resolve/openurl?genre=article&sid=nlm:pubmed&issn=0965-2140&date=1996&volume=91&issue=11&spage=1699