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.
Jonsson N, Asplund K.Jonsson N, et al. Among authors: asplund k.Stroke. 2001 May;32(5):1112-5. doi: 10.1161/01.str.32.5.1112.Stroke. 2001.PMID: 11340218