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.
Sutton AJ, Jones DR, Abrams KR, Sheldon TA, Song F.Sutton AJ, et al. Among authors: abrams kr.J Health Serv Res Policy. 1999 Jan;4(1):49-55. doi: 10.1177/135581969900400112.J Health Serv Res Policy. 1999.PMID: 10345567Review.
Song F, Sheldon TA, Sutton AJ, Abrams KR, Jones DR.Song F, et al. Among authors: abrams kr.Eval Health Prof. 2001 Jun;24(2):126-51. doi: 10.1177/016327870102400203.Eval Health Prof. 2001.PMID: 11523383