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Harris-Hayes M, Steger-May K, Pashos G, Clohisy JC, Prather H.Harris-Hayes M, et al.Physiother Theory Pract. 2012 Jul;28(5):333-43. doi: 10.3109/09593985.2011.639852. Epub 2011 Dec 22.Physiother Theory Pract. 2012.PMID: 22191475Free PMC article.