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Cox G, McGonagle D, Boxall SA, Buckley CT, Jones E, Giannoudis PV.Cox G, et al.J Bone Joint Surg Br. 2011 Apr;93(4):517-24. doi: 10.1302/0301-620X.93B4.25506.J Bone Joint Surg Br. 2011.PMID: 21464493Free article.