Wolf James, Nagel Maria A, Mahalingam Ravi, Cohrs Randall J, Schmid D Scott, Gilden Don
Department of Neurology, Greater Baltimore Medical Center, Baltimore, MD, USA.
Neurology. 2012 Aug 21;79(8):828-9. doi: 10.1212/WNL.0b013e3182661ffa. Epub 2012 Aug 8.