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Xu HF, Zhu X, Chen H, Wang XD, Cao G, Liu P, Gao S, Guo JH.Xu HF, et al.Zhonghua Yi Xue Za Zhi. 2013 Jan 1;93(1):55-7.Zhonghua Yi Xue Za Zhi. 2013.PMID: 23578457Chinese.
Liu LG, Miao RY, Lu X, Xu YY, Du SD, Xu HF, Chi TY, Yang HY, Yang ZY, Mao YL, Sang XT, Zhong SX, Huang JF, Zhao HT.Liu LG, et al. Among authors: xu hf, xu yy.Zhonghua Yi Xue Za Zhi. 2010 Dec 14;90(46):3251-4.Zhonghua Yi Xue Za Zhi. 2010.PMID: 21223780Chinese.
Chi TY, Yang ZY, Xue HD, Lü K, Feng RE, Xu HF, Yang XB, Sang XT, Lu X, Mao YL, Zhong SX, Huang JF.Chi TY, et al. Among authors: xu hf.Zhonghua Yi Xue Za Zhi. 2011 Jun 28;91(24):1694-7.Zhonghua Yi Xue Za Zhi. 2011.PMID: 21914319Review.Chinese.