Name	Info	Provider	Link
	subscription/membership/fee required	Ingenta plc	https://www.ingentaconnect.com/openurl?genre=article&issn=1019-6439&volume=16&issue=6&spage=1107&aulast=Astrom
	subscription/membership/fee required	Spandidos Publications	https://www.spandidos-publications.com/ijo/16/6/1107
Cited by Patents in	free resource	The Lens - Patent Citations	https://www.lens.org/lens/search/patent/list?q=citation_id:10811981