Name	Info	Provider	Link
	free resource	BioMed Central	https://bmcmedethics.biomedcentral.com/articles/10.1186/s12910-021-00646-y
Emergency Medical Services	free resource	MedlinePlus Health Information	https://medlineplus.gov/emergencymedicalservices.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/34158034/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/34158034
Full text from	free resource	Diposit Digital de la Universitat de Barcelona	http://hdl.handle.net/2445/179453