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.
Upshur RE, Moineddin R, Crighton EJ, Mamdani M.Upshur RE, et al. Among authors: crighton ej.BMC Health Serv Res. 2004 Mar 19;4(1):5. doi: 10.1186/1472-6963-4-5.BMC Health Serv Res. 2004.PMID: 15033001Free PMC article.
Upshur RE, Moineddin R, Crighton EJ, Mamdani M.Upshur RE, et al. Among authors: crighton ej.BMC Health Serv Res. 2006 Mar 1;6:22. doi: 10.1186/1472-6963-6-22.BMC Health Serv Res. 2006.PMID: 16509992Free PMC article.
Moineddin R, Upshur RE, Crighton E, Mamdani M.Moineddin R, et al.Popul Health Metr. 2003 Dec 15;1(1):10. doi: 10.1186/1478-7954-1-10.Popul Health Metr. 2003.PMID: 14675482Free PMC article.