Name	Info	Provider	Link
	subscription/membership/fee required	Ingenta plc	https://www.ingentaconnect.com/openurl?genre=article&issn=0147-5185&volume=44&issue=5&spage=657&aulast=Egan
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=31764221.ui
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/31764221/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/31764221
	subscription/membership/fee required	Wolters Kluwer	https://doi.org/10.1097/PAS.0000000000001414