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.
van der Werf SP, Jongen PJ, Lycklama à Nijeholt GJ, Barkhof F, Hommes OR, Bleijenberg G.van der Werf SP, et al. Among authors: barkhof f.J Neurol Sci. 1998 Oct 8;160(2):164-70. doi: 10.1016/s0022-510x(98)00251-2.J Neurol Sci. 1998.PMID: 9849800Clinical Trial.
Barkhof F, Scheltens P, Frequin ST, Nauta JJ, Tas MW, Valk J, Hommes OR.Barkhof F, et al.AJR Am J Roentgenol. 1992 Nov;159(5):1041-7. doi: 10.2214/ajr.159.5.1414773.AJR Am J Roentgenol. 1992.PMID: 1414773
Barkhof F, Valk J, Hommes OR, Scheltens P, Nauta JJ.Barkhof F, et al.AJNR Am J Neuroradiol. 1992 Jul-Aug;13(4):1257-9.AJNR Am J Neuroradiol. 1992.PMID: 1636547Free PMC article.