1. Department of Microbiology and Immunology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
2. Center for AIDS Research, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
3. Children’s Research Institute, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
4. Department of Biostatistics, Gillings School of Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
5. Duke Human Vaccine Institute, Duke University Medical Center, Durham, North Carolina, USA
6. Department of Surgery, Duke University School of Medicine, Durham, North Carolina, USA
7. Department of Molecular Genetics and Microbiology, Duke University Medical Center, Durham, North Carolina, USA
8. Department of Microbiology, Immunology and Parasitology, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA
9. California National Primate Research Center, University of California at Davis, Davis, California, USA
10. Department of Pediatrics, Weill Cornell Medical College, New York, New York, USA