Name	Info	Provider	Link
	subscription/membership/fee required	Ingenta plc	https://www.ingentaconnect.com/openurl?genre=article&issn=1107-3756&volume=21&issue=5&spage=539&aulast=Kang
	subscription/membership/fee required	Spandidos Publications	https://www.spandidos-publications.com/ijmm/21/5/539