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Wang YZ, Park KW, Oh CS, Ahn YS, Kang QL, Jung ST, Song HR.Wang YZ, et al. Among authors: ahn ys.BMC Musculoskelet Disord. 2015 Mar 15;16:54. doi: 10.1186/s12891-015-0514-5.BMC Musculoskelet Disord. 2015.PMID: 25888017Free PMC article.