Name	Info	Provider	Link
Vitamin D	free resource	MedlinePlus Health Information	https://medlineplus.gov/vitamind.html
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=31919503.ui
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/31919503/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/31919503
	free resource	NCI CPTC Antibody Characterization Program	https://antibodies.cancer.gov/detail/CPTC-OTUB1-1
	free resource	NCI CPTAC Assay Portal	https://assays.cancer.gov/CPTAC-145
	subscription/membership/fee required	Silverchair Information Systems	https://academic.oup.com/rheumatology/article-lookup/doi/10.1093/rheumatology/kez615