Name	Info	Provider	Link
	subscription/membership/fee required	Ingenta plc	https://www.ingentaconnect.com/openurl?genre=article&issn=1050-642X&volume=31&issue=5&spage=e221&aulast=O'Brien
Concussion	free resource	MedlinePlus Health Information	https://medlineplus.gov/concussion.html
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=33973883.ui
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/33973883/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/33973883
	free resource	NCI CPTC Antibody Characterization Program	https://antibodies.cancer.gov/detail/CPTC-HLA-B-1
	free resource	scite Smart Citations	https://scite.ai/reports/33973883
	subscription/membership/fee required	Wolters Kluwer	https://doi.org/10.1097/JSM.0000000000000943