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.
Glass TA, Mendes de Leon CF, Seeman TE, Berkman LF.Glass TA, et al. Among authors: seeman te.Soc Sci Med. 1997 May;44(10):1503-17. doi: 10.1016/s0277-9536(96)00270-5.Soc Sci Med. 1997.PMID: 9160440