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.
Schweigkofler H, Sperner-Unterweger B, Kopp M, Trojer-Zeidler M, Holzner B.Schweigkofler H, et al. Among authors: holzner b.Nervenarzt. 1996 Sep;67(9):799-804. doi: 10.1007/s001150050057.Nervenarzt. 1996.PMID: 8992380German.