Affiliation: | (1) Department of Neurosurgery, AZ St Lucas, Groenebriel 1, 9000 Gent, Belgium,;(2) Department of Neuroradiology, AZ St Lucas, Groenebriel 1, 9000 Gent, Belgium,;(3) Department of Neurosurgery, Wentworth Hospital, Nelson R. Mandela School of Medicine, University of Natal, Durban, South Africa, |