Name Info Provider Link
free resource MDPI https://www.mdpi.com/resolver?pii=ijerph17124505
Chronic Pain free resource MedlinePlus Health Information https://medlineplus.gov/chronicpain.html
free resource PubMed Central https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/32585914/
free resource Europe PubMed Central https://europepmc.org/abstract/MED/32585914