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Chen YJ, Chen HY, Lo DF, Chen HT, Hsu HC.Chen YJ, et al. Among authors: hsu hc.Spine J. 2014 Dec 1;14(12):3025-9. doi: 10.1016/j.spinee.2014.07.007. Epub 2014 Jul 24.Spine J. 2014.PMID: 25064004