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Wang N, Jiang CY, Jiang MX, Zhang CX, Cheng JA.Wang N, et al.J Zhejiang Univ Sci B. 2010 Sep;11(9):728-34. doi: 10.1631/jzus.B1000139.J Zhejiang Univ Sci B. 2010.PMID: 20803777Free PMC article.