Douis Hassan, Jafri Mariam, Sherlala Khaled
Department of Neuroradiology, University Hospital Coventry and Warwickshire NHS Trust, Clifford Bridge Road, Coventry CV2 2DX, England.
Arch Neurol. 2008 Dec;65(12):1666-7. doi: 10.1001/archneur.65.12.1666.