Name Info Provider Link
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=22187319.ui
subscription/membership/fee required Silverchair Information Systems https://academic.oup.com/ndt/article-lookup/doi/10.1093/ndt/gfr709