Mortimer Alex M, Simpson Ewan, Bradley Marcus D, Renowden Shelley A
Department of Neuroradiology, Frenchay Hospital, Frenchay Park Rd, Bristol, BS161LE, United Kingdom.
Stroke. 2013 May;44(5):1480-8. doi: 10.1161/STROKEAHA.111.679522. Epub 2013 Mar 14.