https://pubmed.ncbi.nlm.nih.gov/31529101/
https://pubmed.ncbi.nlm.nih.gov/24477618/
https://pubmed.ncbi.nlm.nih.gov/32975538/
https://pdfs.semanticscholar.org/bf13/a38de911333ee350924cfba2b301b8b0d823.pdf
https://pubmed.ncbi.nlm.nih.gov/29016948/
https://pubmed.ncbi.nlm.nih.gov/25237981/
https://www.ijtra.com/view/oxidative-stress-and-antioxidant-levels-in-chronic-back-pain-.pdf
https://pubmed.ncbi.nlm.nih.gov/24396231/
index