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Polly DW Jr, Potter BK, Kuklo T, Young S, Johnson C, Klemme WR.Polly DW Jr, et al.Spine (Phila Pa 1976). 2004 Jan 1;29(1):63-9. doi: 10.1097/01.BRS.0000105525.06564.56.Spine (Phila Pa 1976). 2004.PMID: 14699278