1. Department of Global Health, University of Washington, Seattle, Washington.
2. Department of Psychosocial and Community Health, University of Washington, Seattle, Washington.
3. Kenya Medical Research Institute (KEMRI)/Centers for Disease Control and Prevention (CDC) Research and Public Health Collaboration, Kisumu, Kenya.
4. Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia.
5. Kenyatta National Hospital/ University of Nairobi, Nairobi, Kenya.
6. Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia.
7. Department of Biobehavioral Nursing and Health Systems, University of Washington, Seattle, Washington.
8. Department of Medicine, University of Washington, Seattle, Washington.
9. Department of Pediatrics, University of Washington, Seattle, Washington.
10. Department of Epidemiology, University of Washington, Seattle, Washington.