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.
Marshall EG, Wong ST, Haggerty JL, Levesque JF.Marshall EG, et al. Among authors: haggerty jl.BMC Health Serv Res. 2010 Feb 22;10:46. doi: 10.1186/1472-6963-10-46.BMC Health Serv Res. 2010.PMID: 20175909Free PMC article.