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Zhang YP, Wu JP, Li XT, Lei CX, Xu JZ, Yin M.Zhang YP, et al. Among authors: li xt.Zhonghua Fu Chan Ke Za Zhi. 2011 Sep;46(9):644-8.Zhonghua Fu Chan Ke Za Zhi. 2011.PMID: 22176986Chinese.
Xia YP, Zhu MW, Li XT, Zhou HP, Wang J, Lv JX, Zhong N.Xia YP, et al. Among authors: li xt.Beijing Da Xue Xue Bao Yi Xue Ban. 2006 Feb 18;38(1):49-52.Beijing Da Xue Xue Bao Yi Xue Ban. 2006.PMID: 16415966Free article.
Guo QS, Zhang YP, Li XT, Han JL.Guo QS, et al. Among authors: li xt.Zhonghua Yi Xue Yi Chuan Xue Za Zhi. 2007 Feb;24(1):80-3.Zhonghua Yi Xue Yi Chuan Xue Za Zhi. 2007.PMID: 17285551Chinese.
Ren YY, Li XT, Gui YH, Yan YL, Chang C, Zhang JH, Sun L, Zhou YQ, Kong FB, Zhao W.Ren YY, et al. Among authors: li xt.Zhonghua Fu Chan Ke Za Zhi. 2008 Aug;43(8):589-92.Zhonghua Fu Chan Ke Za Zhi. 2008.PMID: 19087493Chinese.
Sun WH, Yang Y, Zhang YP, Li XT, Zhang M, Cao Y, Wang Y.Sun WH, et al. Among authors: li xt.Zhonghua Er Ke Za Zhi. 2011 May;49(5):356-60.Zhonghua Er Ke Za Zhi. 2011.PMID: 21624287Chinese.
Zhou J, Zhang Y, Gui Y, Chu C, Zhang C, Zhou Q, Zhang Y, Li X, Yan Y.Zhou J, et al.J Ultrasound Med. 2014 Sep;33(9):1677-82. doi: 10.7863/ultra.33.9.1677.J Ultrasound Med. 2014.PMID: 25154952
Chu C, Yan Y, Ren Y, Li X, Gui Y.Chu C, et al.Acta Obstet Gynecol Scand. 2017 Apr;96(4):454-463. doi: 10.1111/aogs.13085. Epub 2017 Feb 13.Acta Obstet Gynecol Scand. 2017.PMID: 28029179Free article.