1. T lymphocyte Biology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
2. Center for Infectious Disease and Vaccine Research, La Jolla Institute for Immunology, La Jolla, California, USA
3. Department of Medicine, Division of Infectious Diseases and Global Public Health, University of California, San Diego (UCSD), California, USA
4. Division of Infectious Diseases, Allergy, and Immunology, Department of Internal Medicine, Department of Molecular Microbiology & Immunology, Saint Louis University, Saint Louis, Missouri, USA
5. Experimental Primate Virology Section, Comparative Medicine Branch, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Poolesville, Maryland, USA