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Sugrue PA, McClendon J Jr, Smith TR, Halpin RJ, Nasr FF, OʼShaughnessy BA, Koski TR.Sugrue PA, et al. Among authors: halpin rj.Spine (Phila Pa 1976). 2013 Mar 15;38(6):484-9. doi: 10.1097/BRS.0b013e318273a1c0.Spine (Phila Pa 1976). 2013.PMID: 22986836