Brain and Mind Research Institute, Weil Cornell Medicine, New York, NY, USA. Burke Neurological Institute, White Plains, NY, USA. Departments of Medicine and Epidemiology, Columbia University Irving Medical Center, New York, NY, USA. Burke Rehabilitation Hospital, White Plains, NY, USA. Lenox Hill Hospital, New York, NY, USA. Laboratory of Neurophysiology, GIGA-Neurosciences, University of Liege, Belgium. Department of Population Health Sciences, Weill Cornell Medicine, New York, NY, USA. Department of Neuroscience, Georgetown University, Washington, DC, USA. Mailman School of Public Health, The Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Columbia University Irving Medical Center, New York, NY, USA. Departments of Neurology, Psychiatry, GH Sergievsky Center, the Taub Institute for the Research on Alzheimer's Disease and the Aging Brain, Columbia University Irving Medical Center, New York, NY, USA. Department of Neurology and the Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Columbia University Irving Medical Center, New York, NY, USA. Rancho Los Amigos National Rehabilitation Center, Downey, CA, USA. Department of Neurology, Keck School of Medicine of USC, Los Angeles, CA, USA. Einstein College of Medicine, Bronx NY; Westmed Medical Group White Plains, NY, USA.