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.
Helseth A, Haug E, Nesland JM, Siegal GP, Fodstad O, Bautch VL.Helseth A, et al.J Neurosurg. 1995 May;82(5):879-85. doi: 10.3171/jns.1995.82.5.0879.J Neurosurg. 1995.PMID: 7714615
Helseth A, Bautch VL, Haug E, Holm R, Nesland JM, Fodstad O.Helseth A, et al.Tidsskr Nor Laegeforen. 1993 Jan 20;113(2):206-10.Tidsskr Nor Laegeforen. 1993.PMID: 8381565Norwegian.