Lambova, Sevdalina, Valery Shirinsky, and Ivan Shirinsky. “Chondroitin Sulfate for Osteoarthritis – Is There a Risk for Cancer: An Analysis of Osteoarthritis Initiative Data”. Rheumatology (Bulgaria) 31, no. 4 (March 11, 2024): 14–27. Accessed July 14, 2026. https://www.rheumatologybg.org/journal/rbj/article/view/54.