References

1. https://www.ncbi.nlm.nih.gov/pubmed/16858489
2. https://www.dea.gov/factsheets/fentanyl
3. https://www.cdc.gov/drugoverdose/epidemic/index.html
4. https://www.medicinenet.com/script/main/art.asp?articlekey=6970
5. https://gokhalemethod.com/gokhale-method
6. https://www.npr.org/2016/07/04/484647073/why-back-pain-is-nearly-non-existent-in-some-populations
7. https://www.health.harvard.edu/staying-healthy/understanding-inflammation
8. https://www.ncbi.nlm.nih.gov/pubmed/28789470
9. https://www.ncbi.nlm.nih.gov/pubmed/28091823
10. https://www.rheumatologynetwork.com/pain/do-nsaids-impair-healing-musculoskeletal-injuries
11. http://jeb.biologists.org/content/204/18/3133
12. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5574337/
13. https://www.ncbi.nlm.nih.gov/pubmed/12496677
14. https://www.ncbi.nlm.nih.gov/pubmed/12496677