Name	Info	Provider	Link
	subscription/membership/fee required	Ingenta plc	https://www.ingentaconnect.com/openurl?genre=article&issn=1107-3756&volume=16&issue=2&spage=221&aulast=Wang
	subscription/membership/fee required	Spandidos Publications	https://www.spandidos-publications.com/ijmm/16/2/221