Agid R, Ducreux D, Halliday W C, Kucharczyk W, terBrugge K G, Mikulis D J
Department of Medical Imaging, Division of Neuroradiology, Toronto Western Hospital of the University Health Network and the University of Toronto, ON, Canada.
Neurology. 2003 Dec 23;61(12):1821-3. doi: 10.1212/01.wnl.0000099200.58205.ce.