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.
Calderwood SK, Murshid A, Prince T.Calderwood SK, et al.Gerontology. 2009;55(5):550-8. doi: 10.1159/000225957. Epub 2009 Jun 18.Gerontology. 2009.PMID: 19546513Free PMC article.Review.
Murshid A, Chou SD, Prince T, Zhang Y, Bharti A, Calderwood SK.Murshid A, et al. Among authors: calderwood sk.PLoS One. 2010 Nov 9;5(11):e13830. doi: 10.1371/journal.pone.0013830.PLoS One. 2010.PMID: 21085490Free PMC article.
Zhang Y, Murshid A, Prince T, Calderwood SK.Zhang Y, et al. Among authors: calderwood sk.PLoS One. 2011;6(12):e28950. doi: 10.1371/journal.pone.0028950. Epub 2011 Dec 22.PLoS One. 2011.PMID: 22216146Free PMC article.