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.
Nyrop KA, Grover M, Palsson OS, Heymen S, Palmer MH, Goode PS, Whitehead WE, Busby-Whitehead J.Nyrop KA, et al. Among authors: goode ps.J Am Med Dir Assoc. 2012 May;13(4):350-4. doi: 10.1016/j.jamda.2011.01.010. Epub 2011 Mar 12.J Am Med Dir Assoc. 2012.PMID: 21450249Free PMC article.