1 Department of Pediatrics, Division of Pediatric Infectious Diseases, Indiana University School of Medicine, Indianapolis, Indiana; Vanderbilt Vaccine Research Program, Department of Pediatrics, Division of Pediatric Infectious Diseases, Nashville, Tennessee.
2 Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, Georgia; University of California San Francisco, San Francisco, California.
3 Emmes Company, Rockville, Maryland.
4 Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, Georgia.
5 Vanderbilt Vaccine Research Program, Department of Pediatrics, Division of Pediatric Infectious Diseases, Nashville, Tennessee.