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.
Valkanoff TA, Kline-Simon AH, Sterling S, Campbell C, Von Korff M.Valkanoff TA, et al.J Soc Work Disabil Rehabil. 2012;11(2):128-42. doi: 10.1080/1536710X.2012.677653.J Soc Work Disabil Rehabil. 2012.PMID: 22630601Free PMC article.