1. Department of Pediatrics, Duke University Medical Center, Durham, North Carolina, USA
2. Human Vaccine Institute, Duke University Medical Center, Durham, North Carolina, USA
3. Division of Pediatric Infectious Diseases and Immunology, University of Minnesota, Minneapolis, Minnesota, USA
4. Department of Pediatrics, University of Pennsylvania, Doylestown, Pennsylvania, USA
5. Vaxconsult, Doylestown, Pennsylvania, USA