Name	Info	Provider	Link
	subscription/membership/fee required	International Union of Crystallography	http://scripts.iucr.org/cgi-bin/paper?S0108270108003132
	free resource	NCI CPTAC Assay Portal	https://assays.cancer.gov/CPTAC-317
Cited by Patents in	free resource	The Lens - Patent Citations	https://www.lens.org/lens/search/patent/list?q=citation_id:18322341