Name	Info	Provider	Link
	free resource	BioMed Central	https://bmccancer.biomedcentral.com/articles/10.1186/s12885-016-2768-1
Pain	free resource	MedlinePlus Health Information	https://medlineplus.gov/pain.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/27632982/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/27632982
	free resource	scite Smart Citations	https://scite.ai/reports/27632982