1. Department of Pediatrics, Emory University and Children's Healthcare of Atlanta, Georgia
2. Department of Medicine, Miriam Hospital and Alpert Medical School of Brown University, Providence, Rhode Island
3. Fred Hutchinson Cancer Research Center, Seattle, Washington
4. Department of Surgery, Duke University School of Medicine, Durham, North Carolina
5. Department of Internal Medicine, St. Louis University School of Medicine, Missouri
6. Division of AIDS, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
7. Novartis Vaccines and Diagnostics, Cambridge, Massachusetts