Name	Info	Provider	Link
	subscription/membership/fee required	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S0022-1759(08)00253-6
Blood	free resource	MedlinePlus Health Information	https://medlineplus.gov/blood.html
Cited by Patents in	free resource	The Lens - Patent Citations	https://www.lens.org/lens/search/patent/list?q=citation_id:18771669
	free resource	Biospecimen Research Database	https://brd.nci.nih.gov/brd/paper/j-immunol-methods/2008/assessment-of-sample-collection-and-storage-methods-for-multicenter/11408