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.
Ji Y, Liu P, Li Y, Bekele BN.Ji Y, et al. Among authors: li y.Clin Trials. 2010 Dec;7(6):653-63. doi: 10.1177/1740774510382799. Epub 2010 Oct 8.Clin Trials. 2010.PMID: 20935021Free PMC article.
Yin G, Li Y, Ji Y.Yin G, et al. Among authors: li y.Biometrics. 2006 Sep;62(3):777-84. doi: 10.1111/j.1541-0420.2006.00534.x.Biometrics. 2006.PMID: 16984320
Ji Y, Li Y, Nebiyou Bekele B.Ji Y, et al. Among authors: li y.Clin Trials. 2007;4(3):235-44. doi: 10.1177/1740774507079442.Clin Trials. 2007.PMID: 17715248
Huang X, Ning J, Li Y, Estey E, Issa JP, Berry DA.Huang X, et al. Among authors: li y.Stat Med. 2009 May 30;28(12):1680-9. doi: 10.1002/sim.3578.Stat Med. 2009.PMID: 19326367Free PMC article.
Bekele BN, Li Y, Ji Y.Bekele BN, et al. Among authors: li y.Biometrics. 2010 Jun;66(2):541-8. doi: 10.1111/j.1541-0420.2009.01297.x. Epub 2009 Jul 23.Biometrics. 2010.PMID: 19645698Free PMC article.
Guo B, Li Y.Guo B, et al. Among authors: li y.BMC Med Res Methodol. 2014 Jul 29;14:95. doi: 10.1186/1471-2288-14-95.BMC Med Res Methodol. 2014.PMID: 25074481Free PMC article.
Guo B, Li Y, Yuan Y.Guo B, et al. Among authors: li y.J R Stat Soc Ser C Appl Stat. 2016 Feb;65(2):259-272. doi: 10.1111/rssc.12113. Epub 2016 Aug 10.J R Stat Soc Ser C Appl Stat. 2016.PMID: 26877554Free PMC article.
Li Y, Lin X, Müller P.Li Y, et al.Biometrics. 2010 Mar;66(1):70-8. doi: 10.1111/j.1541-0420.2009.01227.x. Epub 2009 May 7.Biometrics. 2010.PMID: 19432777Free PMC article.
Guo B, Li Y.Guo B, et al. Among authors: li y.Stat Med. 2015 Feb 28;34(5):859-75. doi: 10.1002/sim.6376. Epub 2014 Nov 21.Stat Med. 2015.PMID: 25413162Free PMC article.