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.
Smith RD, Coast J.Smith RD, et al. Among authors: coast j.Bull World Health Organ. 2002;80(2):126-33.Bull World Health Organ. 2002.PMID: 11953791Free PMC article.
Wilton P, Smith R, Coast J, Millar M.Wilton P, et al. Among authors: coast j.J Health Serv Res Policy. 2002 Apr;7(2):111-7. doi: 10.1258/1355819021927764.J Health Serv Res Policy. 2002.PMID: 11934376Review.