Dammers Ruben, ter Laak-Poort Mariel P, Maas Andrew I R
Department of Neurosurgery, Erasmus Medical Centre, s Gravendijkwal 230, PO Box 2040, 3000 CA Rotterdam, The Netherlands.
J Neurol Neurosurg Psychiatry. 2007 May;78(5):542-3. doi: 10.1136/jnnp.2006.108662.