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White K, Di Stasi SL, Smith AH, Snyder-Mackler L.White K, et al. Among authors: smith ah.BMC Musculoskelet Disord. 2013 Mar 23;14:108. doi: 10.1186/1471-2474-14-108.BMC Musculoskelet Disord. 2013.PMID: 23522373Free PMC article.Clinical Trial.