Klawiter E C, Alvarez E, Xu J, Paciorkowski A R, Zhu L, Parks B J, Cross A H, Naismith R T
Neurology, Box 8111, 660 S. Euclid Ave., Washington University, St. Louis, MO 63110, USA.
Neurology. 2009 Mar 24;72(12):1101-3. doi: 10.1212/01.wnl.0000345066.57745.50.