Name	Info	Provider	Link
	free resource	BioMed Central	https://arthritis-research.biomedcentral.com/articles/10.1186/ar3289
Pain	free resource	MedlinePlus Health Information	https://medlineplus.gov/pain.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/21426569/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/21426569