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Bambakidis NC, Feiz-Erfan I, Klopfenstein JD, Sonntag VK.Bambakidis NC, et al.Spine (Phila Pa 1976). 2005 Aug 15;30(16 Suppl):S2-6. doi: 10.1097/01.brs.0000174509.31291.26.Spine (Phila Pa 1976). 2005.PMID: 16103830Review.