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.
Lang C, Kalak N, Brand S, Holsboer-Trachsler E, Pühse U, Gerber M.Lang C, et al. Among authors: gerber m.Sleep Med Rev. 2016 Aug;28:32-45. doi: 10.1016/j.smrv.2015.07.004. Epub 2015 Aug 5.Sleep Med Rev. 2016.PMID: 26447947Review.