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Song MH, Yoo WJ, Cho TJ, Chung CY, Park MS, Cheon JE, Choi IH.Song MH, et al. Among authors: yoo wj.BMC Musculoskelet Disord. 2015 Jan 31;16(1):3. doi: 10.1186/s12891-015-0456-y.BMC Musculoskelet Disord. 2015.PMID: 25637327Free PMC article.