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Wang HL, Zhang XC, Song SY, Ma YF, Yu XF, Liu YL.Wang HL, et al. Among authors: yu xf.Ying Yong Sheng Tai Xue Bao. 2011 Oct;22(10):2609-14.Ying Yong Sheng Tai Xue Bao. 2011.PMID: 22263465Chinese.