1 Neuropsychiatry Program, Department of Psychiatry and Division of Neurology, Department of Medicine, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON, Canada; Division of Cognitive Neurology, Department of Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA. Electronic address: matt.burke@utoronto.ca.
2 Division of Infectious Diseases, Department of Internal Medicine, Emory University School of Medicine, Atlanta, Georgia, USA.