An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Niu Z, Feng Y, Zhang A, Sun Y, Zhang H.Niu Z, et al. Among authors: feng y.Gynecol Endocrinol. 2008 Aug;24(8):452-8. doi: 10.1080/09513590802196247.Gynecol Endocrinol. 2008.PMID: 18850383Free article.Clinical Trial.
Niu ZH, Feng Y, Zhang AJ, Zhang HQ, Sun YJ, Lu XW.Niu ZH, et al. Among authors: feng y.Zhonghua Fu Chan Ke Za Zhi. 2009 Jun;44(6):413-7.Zhonghua Fu Chan Ke Za Zhi. 2009.PMID: 19953939Chinese.
Han JL, Chen H, Niu ZH, Sun YJ, Sun XX, Zhao XM, Kuang YP, Teng XM, Ji YZ, Wang YB, Feng Y.Han JL, et al. Among authors: feng y.Zhonghua Fu Chan Ke Za Zhi. 2010 Feb;45(2):124-7.Zhonghua Fu Chan Ke Za Zhi. 2010.PMID: 20420783Chinese.
Zhang A, Xu B, Sun Y, Lu X, Niu Z, Chen Q, Feng Y, Xu C.Zhang A, et al. Among authors: feng y.J Assist Reprod Genet. 2012 Apr;29(4):313-9. doi: 10.1007/s10815-012-9712-3. Epub 2012 Feb 22.J Assist Reprod Genet. 2012.PMID: 22354726Free PMC article.
Sun Y, Feng Y, Zhang A, Lu X, Niu Z, Gu R.Sun Y, et al. Among authors: feng y.J Assist Reprod Genet. 2012 May;29(5):417-21. doi: 10.1007/s10815-012-9731-0. Epub 2012 Mar 15.J Assist Reprod Genet. 2012.PMID: 22419437Free PMC article.
Zhang A, Xu B, Sun Y, Lu X, Gu R, Wu L, Feng Y, Xu C.Zhang A, et al. Among authors: feng y.Fertil Steril. 2012 Oct;98(4):1009-16. doi: 10.1016/j.fertnstert.2012.06.034. Epub 2012 Jul 19.Fertil Steril. 2012.PMID: 22818287Free article.
Sun YJ, Gu RH, Lu XW, Zhao S, Feng Y.Sun YJ, et al. Among authors: feng y.Beijing Da Xue Xue Bao Yi Xue Ban. 2013 Dec 18;45(6):848-51.Beijing Da Xue Xue Bao Yi Xue Ban. 2013.PMID: 24343060Free article.Chinese.