Name	Info	Provider	Link
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=33025622.ui
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/33025622/
	free resource	Wiley	https://onlinelibrary.wiley.com/doi/10.1111/cei.13533
	free resource	NCI CPTC Antibody Characterization Program	https://antibodies.cancer.gov/detail/CPTC-HLA-DRA-1
	free resource	Silverchair Information Systems	https://academic.oup.com/cei/article-lookup/doi/10.1111/cei.13533