Name	Info	Provider	Link
	free resource	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S0032-5791(19)31652-9
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=27030691.ui
	free resource	scite Smart Citations	https://scite.ai/reports/27030691
	subscription/membership/fee required	Silverchair Information Systems	https://academic.oup.com/ps/article-lookup/doi/10.3382/ps/pew108