Name Info Provider Link
free resource BioMed Central https://bmcresnotes.biomedcentral.com/articles/10.1186/s13104-021-05636-2
Pain free resource MedlinePlus Health Information https://medlineplus.gov/pain.html
free resource PubMed Central https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/34090484/
free resource Europe PubMed Central https://europepmc.org/abstract/MED/34090484