1 Department of Neurology, University of Miami, Miller School of Medicine, University of Miami Health System, 1120 NW 14th St, Miami, FL 33136 ([email protected]).
2 Division of Population Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia.
3 Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, Georgia.