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Safir O, Kellett CF, Flint M, Backstein D, Gross AE.Safir O, et al. Among authors: gross ae.Clin Orthop Relat Res. 2009 Jan;467(1):206-12. doi: 10.1007/s11999-008-0573-0. Epub 2008 Oct 30.Clin Orthop Relat Res. 2009.PMID: 18972178Free PMC article.