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.
Leveille SG, LaCroix AZ, Koepsell TD, Beresford SA, Van Belle G, Buchner DM.Leveille SG, et al. Among authors: koepsell td.J Epidemiol Community Health. 1997 Oct;51(5):479-85. doi: 10.1136/jech.51.5.479.J Epidemiol Community Health. 1997.PMID: 9425455Free PMC article.
Cheadle A, Pearson D, Wagner E, Psaty BM, Diehr P, Koepsell T.Cheadle A, et al. Among authors: koepsell t.Public Health Rep. 1994 May-Jun;109(3):405-13.Public Health Rep. 1994.PMID: 8190864Free PMC article.