Name Info Provider Link
subscription/membership/fee required HighWire https://www.bmj.com/lookup/pmidlookup?view=long&pmid=30917964
End of Life Issues free resource MedlinePlus Health Information https://medlineplus.gov/endoflifeissues.html
subscription/membership/fee required Ovid Technologies, Inc. http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=30917964.ui