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Walick KS, King JT, Johnston CE, Rathjen KE.Walick KS, et al.Spine (Phila Pa 1976). 2008 Nov 1;33(23):E877-80. doi: 10.1097/BRS.0b013e3181877b99.Spine (Phila Pa 1976). 2008.PMID: 18978581
Walick KS, Kragh JE Jr, Ward JA, Crawford JJ.Walick KS, et al.Spine (Phila Pa 1976). 2007 Nov 1;32(23):2591-5. doi: 10.1097/BRS.0b013e318158cc23.Spine (Phila Pa 1976). 2007.PMID: 17978659