ROBERT P. LISAK, FAAN, FRCP (E), FANA Parker Webber Chair in Neurology, Professor of Neurology, Professor of Immunology and Microbiology, Wayne State University School of Medicine; Attending Neurologist, Detroit Medical Center, Detroit, MI, USA DANIEL D. TRUONG MD FAAN The Truong Neuroscience Institute, Orange Coast Memorial Medical Center, Fountain Valley, CA, USA; Professor, University California Riverside, Riverside, CA, USA WILLIAM M. CARROLL MBBS MD FRACP FRCP(E) Clinical Professor of Neurology, Western Australian Research Institute, University of Western Australia, Australia ROONGROJ BHIDAYASIRI MD FRCP Director, Chulalongkorn Comprehensive Movement Disorders Center Chulalongkorn University Hospital, Bangkok, Thailand; University of California at Los Angeles, Los Angeles, CA, USA