Name	Info	Provider	Link
	free resource	Atypon	https://journals.sagepub.com/doi/10.3727/215517912X653337?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub 0pubmed
	subscription/membership/fee required	Ingenta plc	https://www.ingentaconnect.com/openurl?genre=article&issn=2155-1790&volume=4&issue=2&spage=77&aulast=Link
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23293747/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/23293747