Name	Info	Provider	Link
Pain	free resource	MedlinePlus Health Information	https://medlineplus.gov/pain.html
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=29329169.ui
Full text from	free resource	Zurich Open Access Repository and Archive	https://doi.org/10.5167/uzh-161573
	free resource	scite Smart Citations	https://scite.ai/reports/29329169
	subscription/membership/fee required	Wolters Kluwer	https://doi.org/10.1097/INF.0000000000001894