Name	Info	Provider	Link
Blood	free resource	MedlinePlus Health Information	https://medlineplus.gov/blood.html
	subscription/membership/fee required	Wiley	https://onlinelibrary.wiley.com/resolve/openurl?genre=article&sid=nlm:pubmed&issn=0041-1132&date=1991&volume=31&issue=7&spage=636
Cited by Patents in	free resource	The Lens - Patent Citations	https://www.lens.org/lens/search/patent/list?q=citation_id:1716385