Name	Info	Provider	Link
	subscription/membership/fee required	Ingenta plc	https://www.ingentaconnect.com/openurl?genre=article&issn=0883-5993&volume=35&issue=4&spage=228&aulast=Sverzellati
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=32271278.ui
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/32271278/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/32271278
	subscription/membership/fee required	Wolters Kluwer	https://doi.org/10.1097/RTI.0000000000000516