Ferioli Simona, Dalmau Josep, Kobet Christopher A, Zhai Qihui Jim, Broderick Joseph P, Espay Alberto J
Department of Neurology, University of Cincinnati, 260 Stetson Street, Cincinnati, OH 45267-0525, USA.
Arch Neurol. 2010 Feb;67(2):250-1. doi: 10.1001/archneurol.2009.317.