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Li Q, Zhou J, Qu F.Li Q, et al. Among authors: qu f.Zhonghua Zhong Liu Za Zhi. 2001 Mar;23(2):170-2.Zhonghua Zhong Liu Za Zhi. 2001.PMID: 11783029Clinical Trial.Chinese.
Qu F, Zhou J, Yang DX, Ma WG, Ma BZ.Qu F, et al.Zhong Xi Yi Jie He Xue Bao. 2006 Nov;4(6):634-8. doi: 10.3736/jcim20060619.Zhong Xi Yi Jie He Xue Bao. 2006.PMID: 17090383