Name Info Provider Link
Emergency Medical Services free resource MedlinePlus Health Information https://medlineplus.gov/emergencymedicalservices.html
subscription/membership/fee required Ovid Technologies, Inc. http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=32947560.ui
free resource PubMed Central https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/32947560/
free resource Europe PubMed Central https://europepmc.org/abstract/MED/32947560
subscription/membership/fee required Wolters Kluwer https://doi.org/10.1097/PEC.0000000000002244