2. http://emedicine.medscape.com/article/819204-overview#a0104
3. http://emedicine.medscape.com/article/819204-overview#a0104
4. http://www.rxlist.com/nortriptyline-hydrochloride-side-effects-drug-center.htm
5. http://www.rxlist.com/tegretol-drug/indications-dosage.htm
6. http://www.ncbi.nlm.nih.gov/pubmed/21399917
7. http://www.rxlist.com/xiaflex-drug/side-effects-interactions.htm
8. http://www.bandolier.org.uk/booth/painpag/Acutrev/Analgesics/lftab.html
9. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1855338/#!po=34.8485
10. http://emedicine.medscape.com/article/1831191-medication#2
11. http://emedicine.medscape.com/article/1831191-medication#7
12. http://www.fpnotebook.com/Rheum/Pharm/InjctblCrtcstrd.htm
13. http://www.medscape.com/viewarticle/574279
14. http://www.ncbi.nlm.nih.gov/pubmed/17227290
15. http://www.drugs.com/ppa/aspirin-acetylsalicylic-acid-asa.html
16. http://www.rxlist.com/cox-2_inhibitors/drugs-condition.htm
17. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2831229/
18. http://www.bmj.com/content/341/bmj.c4675
http://ard.bmj.com/content/early/2017/04/29/annrheumdis-2016-210860
19. http://onlinelibrary.wiley.com/doi/10.1002/ana.22066/abstract