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.
Baier RR, Butterfield K, Harris Y, Gravenstein S.Baier RR, et al. Among authors: butterfield k.J Am Med Dir Assoc. 2008 Oct;9(8):594-8. doi: 10.1016/j.jamda.2008.06.008. Epub 2008 Sep 7.J Am Med Dir Assoc. 2008.PMID: 19083294
Pop-Vicas A, Butterfield K, Gardner R.Pop-Vicas A, et al. Among authors: butterfield k.Med Health R I. 2010 Sep;93(9):263-6.Med Health R I. 2010.PMID: 20957908No abstract available.