Name Info Provider Link
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/34462905/
subscription/membership/fee required Springer https://doi.org/10.1007/s11136-021-02983-2
free resource Europe PubMed Central https://europepmc.org/abstract/MED/34462905