van Egmond Martje E, Luijckx Gert-Jan, Kramer Henk, Benne Cornelis A, Slebos Dirk-Jan, van Assen Sander
Department of Neurology, University Medical Center Groningen, Groningen, The Netherlands.
Clin Neurol Neurosurg. 2011 Feb;113(2):153-5. doi: 10.1016/j.clineuro.2010.09.011. Epub 2010 Oct 20.