Name	Info	Provider	Link
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=18419541.ui
	free resource	NCI CPTC Antibody Characterization Program	https://antibodies.cancer.gov/detail/CPTC-PTGS2-1
Full text from	free resource	CORE	https://core.ac.uk/reader/55750002?utm_source=linkout
	subscription/membership/fee required	Silverchair Information Systems	https://academic.oup.com/jid/article-lookup/doi/10.1086/528989