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.
Li Y, Corriveau M, Aagaard-Kienitz B, Ahmed A, Niemann D.Li Y, et al. Among authors: niemann d.Neurosurgery. 2019 Jun 1;84(6):1261-1268. doi: 10.1093/neuros/nyy182.Neurosurgery. 2019.PMID: 29741656
Turk AS, Niemann DB, Ahmed A, Aagaard-Kienitz B.Turk AS, et al. Among authors: niemann db.AJNR Am J Neuroradiol. 2007 Mar;28(3):533-6.AJNR Am J Neuroradiol. 2007.PMID: 17353331Free PMC article.