1. https://www.cdc.gov/arthritis/data_statistics/arthritis-related-stats.htm
2. https://www.ncbi.nlm.nih.gov/pubmed/24002213
3. https://www.webmd.com/diet/supplement-guide-chondroitin
4. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4175880/
5. https://www.webmd.com/vitamins-and-supplements/supplement-guide-glucosamine
6. http://www.fiercepharma.com/sales-and-marketing/top-10-rheumatoid-arthritis-drugs-2013
7. http://fitlife.tv/everything-you-need-to-know-about-inflammation/
8.https://www.ncbi.nlm.nih.gov/pubmed/16495392