1. Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
2. AIDS and Cancer Virus Program, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research Inc., Frederick, MD 21702, USA.
3. Human Immunology Section, Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA.
4. Department of Mathematics, Southern Methodist University, Dallas, TX 75205, USA.
5. Department of Statistics, University of Pennsylvania, Philadelphia, PA 19104, USA.
6. The Wistar Institute, Philadelphia, PA 19104, USA.
7. Departamento de Investigación en Enfermedades Infecciosas, Instituto Nacional de Enfermedades Respiratorias, Mexico City 14080, Mexico.
8. Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff CF14 4XN, UK.
9. Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
10. Department of Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
11. Vaccine and Gene Therapy Institute, Oregon Health and Science University, Portland, OR 97239, USA.
12. Division of Pathobiology and Immunology, Oregon National Primate Research Center, Oregon Health and Science University, Portland, OR 97239, USA.
13. Department of Medicine, University of California, San Francisco General Hospital, San Francisco, CA 94110, USA.
14. Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital Huddinge, 14186 Stockholm, Sweden.