Name	Info	Provider	Link
	subscription/membership/fee required	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S0952-8180(16)30304-X
Pain	free resource	MedlinePlus Health Information	https://medlineplus.gov/pain.html
	free resource	scite Smart Citations	https://scite.ai/reports/27687441