Name	Info	Provider	Link
	subscription/membership/fee required	Ingenta plc	https://www.ingentaconnect.com/openurl?genre=article&issn=&volume=31&issue=2&spage=400&aulast=Wei
	subscription/membership/fee required	Spandidos Publications	https://www.spandidos-publications.com/ijmm/31/2/400