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Carter SE, Richardson JK, Thies S, DeMott T, Ashton-Miller JA.Carter SE, et al.Am J Phys Med Rehabil. 2009 Mar;88(3):210-5. doi: 10.1097/PHM.0b013e318194fb3c.Am J Phys Med Rehabil. 2009.PMID: 19847130Free PMC article.