1. Fogarty International Clinical Research Training Program, Bethesda, Maryland, Stanford University, Stanford, California, USA, Universidad Nacional Mayor de San Marcos, Lima, Peru
2. Fogarty International Clinical Research Training Program, Bethesda, Maryland, Stein Eye Institute, University of California Los Angeles, Los Angeles, California
3. Fogarty International Clinical Research Training Program, Bethesda, Maryland, Departments of Neurology, Global Health, Epidemiology and Medicine (Infectious Diseases), University of Washington, Seattle, Washington
4. Fogarty International Clinical Research Training Program, Bethesda, Maryland
5. Northwest Permanente Physicians & Surgeons, Portland, Oregon, USA
6. Departments of Neurology, Global Health, Epidemiology and Medicine (Infectious Diseases), University of Washington, Seattle, Washington