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.
Liu XC, Keyes KM, Li G.Liu XC, et al. Among authors: keyes km.BMC Public Health. 2014 Dec 18;14:1303. doi: 10.1186/1471-2458-14-1303.BMC Public Health. 2014.PMID: 25523951Free PMC article.
Keyes KM, Li G.Keyes KM, et al.Ann Epidemiol. 2010 Oct;20(10):779-85. doi: 10.1016/j.annepidem.2010.03.006. Epub 2010 Jun 2.Ann Epidemiol. 2010.PMID: 20627769Free PMC article.
Keyes KM, Schulenberg JE, O'Malley PM, Johnston LD, Bachman JG, Li G, Hasin D.Keyes KM, et al.Arch Gen Psychiatry. 2012 Dec;69(12):1304-13. doi: 10.1001/archgenpsychiatry.2012.787.Arch Gen Psychiatry. 2012.PMID: 22868751Free PMC article.