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Gu JY, Bai JL, Shi XL, Zhou JX, Qiu YD, Wu YF, Jiang CP, Sun XT, Xu FG, Zhang Y, Ding YT.Gu JY, et al. Among authors: qiu yd.Zhonghua Wai Ke Za Zhi. 2011 Apr 1;49(4):351-6.Zhonghua Wai Ke Za Zhi. 2011.PMID: 21612703Chinese.