Oliviero, F., Ramonda, R., Hoxha, A., Scanu, A., Galozzi, P., Favero, M., … Punzi, L. (2020). Effect of an oral preparation containing hyaluronic acid, chondroitin sulfate, hydrolyzed collagen type II and hydrolyzed keratin on synovial fluid features and clinical indices in knee osteoarthritis. A pilot study. Reumatismo, 72(3), 125–130. https://doi.org/10.4081/reumatismo.2020.1272