Name	Info	Provider	Link
	subscription/membership/fee required	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S0022-3476(20)30868-4
Opioids and Opioid Use Disorder (OUD)	free resource	MedlinePlus Health Information	https://medlineplus.gov/opioidsandopioidusedisorderoud.html
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=32652077.ui
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/32652077/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/32652077
	free resource	NCI CPTAC Assay Portal	https://assays.cancer.gov/CPTAC-68
	subscription/membership/fee required	ClinicalKey	https://www.clinicalkey.com/content/playBy/pii?v=S0022-3476(20)30868-4