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Oliviero F, Ramonda R, Hoxha A, Scanu A, Galozzi P, Favero M, Frallonardo P, Punzi L. 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 [Internet]. 2020Nov.19 [cited 2021Oct.19];72(3):125-30. Available from: https://reumatismo.org/index.php/reuma/article/view/1272