Name	Info	Provider	Link
	free resource	Atypon	https://www.nejm.org/doi/10.1056/NEJMoa1800965?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub 0www.ncbi.nlm.nih.gov
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=29557719.ui
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/29557719/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/29557719
	free resource	scite Smart Citations	https://scite.ai/reports/29557719