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Lenz M, Gueorguiev B, Joseph S, van der Pol B, Richards RG, Windolf M, Schwieger K, de Boer P.Lenz M, et al. Among authors: richards rg.Arch Orthop Trauma Surg. 2012 Oct;132(10):1437-44. doi: 10.1007/s00402-012-1556-x. Epub 2012 Jun 17.Arch Orthop Trauma Surg. 2012.PMID: 22707211