Reuber M, Baker G A, Gill R, Smith D F, Chadwick D W
Department of Neurology, Sheffield Teaching Hospitals NHS Trust, Walton Centre of Neurology and Neurosurgery, gLiverpool, UK.
Neurology. 2004 Mar 9;62(5):834-5. doi: 10.1212/01.wnl.0000113755.11398.90.