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Shui XL, Xu HZ, Chi YL, Ni WF, Lin Y, Huang QS, Mao FM, Wang XY, Wang S, Xu H.Shui XL, et al.Zhonghua Wai Ke Za Zhi. 2011 Dec;49(12):1086-90.Zhonghua Wai Ke Za Zhi. 2011.PMID: 22333448Chinese.