Name Info Provider Link
Chronic Pain free resource MedlinePlus Health Information https://medlineplus.gov/chronicpain.html
subscription/membership/fee required Ovid Technologies, Inc. http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=33200214.ui
free resource PubMed Central https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/33200214/
free resource Europe PubMed Central https://europepmc.org/abstract/MED/33200214
subscription/membership/fee required Wiley https://doi.org/10.1093/pm/pnaa360
subscription/membership/fee required Silverchair Information Systems https://academic.oup.com/painmedicine/article-lookup/doi/10.1093/pm/pnaa360