Name	Info	Provider	Link
Arthritis	free resource	MedlinePlus Health Information	https://medlineplus.gov/arthritis.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/27998027/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/27998027
	subscription/membership/fee required	Wiley	https://doi.org/10.1002/acr.23175
	free resource	NCI CPTC Antibody Characterization Program	https://antibodies.cancer.gov/detail/CPTC-PGR-1
	free resource	scite Smart Citations	https://scite.ai/reports/27998027