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Reichenbach, Stephan; Blank, Sacha; Rutjes, Anne W S; Shang, Aijing; King, Elizabeth A; Dieppe, Paul A; Jüni, Peter; Trelle, Sven (2007). Hylan versus hyaluronic acid for osteoarthritis of the knee: a systematic review and meta-analysis. Arthritis & rheumatism, 57(8), pp. 1410-1418. Hoboken, N.J.: Wiley-Blackwell 10.1002/art.23103