1. Division of Adolescent and Young Adult Medicine, Children’s National, Washington, DC, USA
2. Center for Translational Science/Children’s Research Institute, Washington, DC, USA
3. George Washington University School of Medicine and Health Sciences, Washington, DC, USA
4. Division of Biostatistics and Study Methodology, Center for Translational Science/Children’s Research Institute, Children’s National, Washington, DC, USA
5. Department of Infectious Diseases, St. Jude Children’s Research Hospital, Memphis, TN, USA
6. Research Department, Children’s Diagnostic & Treatment Center, Fort Lauderdale, FL, USA