1 Division of Neurology, Department of Medicine (Zhu, Burke) and Neuropsychiatry Program, Department of Psychiatry (Burke), Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ont.; Division of Cognitive Neurology, Department of Neurology (Burke), Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Mass.
2 Division of Neurology, Department of Medicine (Zhu, Burke) and Neuropsychiatry Program, Department of Psychiatry (Burke), Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ont.; Division of Cognitive Neurology, Department of Neurology (Burke), Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Mass. matthew.burke@sunnybrook.ca.