1. Department of Neurology, University of Miami, Miller School of Medicine, Miami, FL, USA
2. Department of Neurology, College of Physicians and Surgeons, Columbia University, New York, NY, USA
3. National Institute of Neurological Disorders and Stroke, Bethesda, MD, USA
4. Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, USA