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Phillips FM, Geisler FH, Gilder KM, Reah C, Howell KM, McAfee PC.Phillips FM, et al. Among authors: geisler fh.Spine (Phila Pa 1976). 2015 May 15;40(10):674-83. doi: 10.1097/BRS.0000000000000869.Spine (Phila Pa 1976). 2015.PMID: 25955086Clinical Trial.