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.
MacLean L, Edwards N, Garrard M, Sims-Jones N, Clinton K, Ashley L.MacLean L, et al.Health Promot Int. 2009 Mar;24(1):88-93. doi: 10.1093/heapro/dan041. Epub 2009 Jan 8.Health Promot Int. 2009.PMID: 19131400Review.
Terry AL, Stewart M, Fortin M, Wong ST, Grava-Gubins I, Ashley L, Sullivan-Taylor P, Sullivan F, Zucker L, Thind A.Terry AL, et al.Healthc Policy. 2016 Nov;12(2):19-32.Healthc Policy. 2016.PMID: 28032822Free PMC article.