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.
Sheehan BE, Lau-Barraco C, Linden AN.Sheehan BE, et al.J Am Coll Health. 2013;61(8):444-52. doi: 10.1080/07448481.2013.831352.J Am Coll Health. 2013.PMID: 24152022