Name	Info	Provider	Link
Pain	free resource	MedlinePlus Health Information	https://medlineplus.gov/pain.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/30149836/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/30149836
	free resource	eLife Sciences Publications, Ltd	https://doi.org/10.7554/eLife.36607
	free resource	scite Smart Citations	https://scite.ai/reports/30149836