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Chen YJ, Chang GC, Chen WH, Hsu HC, Lee TS.Chen YJ, et al. Among authors: chen wh.Spine (Phila Pa 1976). 2007 Oct 1;32(21):E615-8. doi: 10.1097/BRS.0b013e318154c5e8.Spine (Phila Pa 1976). 2007.PMID: 17906564
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