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.
Ommerborn MA, Depprich RA, Schneider C, Giraki M, Franz M, Raab WH, Schäfer R.Ommerborn MA, et al. Among authors: depprich ra.Head Face Med. 2019 Jan 29;15(1):4. doi: 10.1186/s13005-019-0188-6.Head Face Med. 2019.PMID: 30696443Free PMC article.