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.
Li N, Feldman MW, Li S.Li N, et al. Among authors: feldman mw.Theor Popul Biol. 2000 Sep;58(2):161-72. doi: 10.1006/tpbi.2000.1478.Theor Popul Biol. 2000.PMID: 11042106
Zhang W, Li S, Feldman MW.Zhang W, et al. Among authors: feldman mw.J Women Aging. 2005;17(3):73-89. doi: 10.1300/J074v17n03_06.J Women Aging. 2005.PMID: 16186096
Lipatov M, Li S, Feldman MW.Lipatov M, et al. Among authors: feldman mw.Proc Natl Acad Sci U S A. 2008 Dec 9;105(49):19171-6. doi: 10.1073/pnas.0806747105. Epub 2008 Dec 1.Proc Natl Acad Sci U S A. 2008.PMID: 19047641Free PMC article.
Li S, Zhang Y, Feldman MW.Li S, et al. Among authors: feldman mw.Popul Res Policy Rev. 2010 Jan 1;29(3):297-317. doi: 10.1007/s11113-009-9141-x.Popul Res Policy Rev. 2010.PMID: 21113384Free PMC article.