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	subscription/membership/fee required	Atypon	https://www.ahajournals.org/doi/10.1161/01.str.24.11.1686?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub 0pubmed
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=8236344.ui
Cited by Patents in	free resource	The Lens - Patent Citations	https://www.lens.org/lens/search/patent/list?q=citation_id:8236344
	subscription/membership/fee required	Wolters Kluwer	https://journals.lww.com/8236344.pmid