1. Blood Systems Research Institute, San Francisco, CA, USA
2. Centre for Geographic Medicine Research – Coast, Kenya Medical Research Institute, Kilifi, Kenya
3. Programa de Oncovirologia, Instituto Nacional de Câncer, Rio de Janeiro, Brazil
4. University of Washington, Seattle, WA, USA
5. Department of Epidemiology and Biostatistics, University of California at San Francisco, CA, USA
6. International AIDS Vaccine Initiative, New York, NY, USA
7. Nuffield Department of Medicine, University of Oxford, Headington, UK
8. Department of Laboratory Medicine, University of California at San Francisco, CA, USA