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.
Burke L, Jancey J, Howat P, Lee A, Kerr D, Shilton T, Hills A, Anderson A.Burke L, et al.BMC Public Health. 2010 Dec 6;10:751. doi: 10.1186/1471-2458-10-751.BMC Public Health. 2010.PMID: 21129226Free PMC article.Clinical Trial.
Kerr DA, Pollard CM, Howat P, Delp EJ, Pickering M, Kerr KR, Dhaliwal SS, Pratt IS, Wright J, Boushey CJ.Kerr DA, et al. Among authors: kerr kr.BMC Public Health. 2012 Jun 22;12:477. doi: 10.1186/1471-2458-12-477.BMC Public Health. 2012.PMID: 22726532Free PMC article.Clinical Trial.