1. Division of Infectious Diseases
2. the Center for Pediatric Clinical Effectiveness, The Children's Hospital of Philadelphia, Pennsylvania
3. Department of Pediatrics
4. The Center for Clinical Epidemiology and Biostatistics, Perelman School of Medicine, University of Pennsylvania, Philadelphia
5. Infectious Diseases Unit, 3rd Department of Pediatrics, Aristotle University School of Health Sciences and Hippokration Hospital, Thessaloniki, Greece
6. Infectious Diseases Section, Department of Pediatrics, Baylor College of Medicine and Texas Children's Hospital, Houston
7. University of Colorado School of Medicine and Children's Hospital Colorado, Aurora
8. Children's Hospital Los Angeles, Keck School of Medicine, University of Southern California
9. All Children's Hospital, St. Petersburg, Florida
10. Department of Epidemiology and Biostatistics, University of California San Francisco
11. Division of Pediatric Infectious Diseases, Department of Pediatrics, Duke University Medical Center, Durham, North Carolina
12. Pediatric Intensive Care Unit, Hippokration General Hospital, Thessaloniki, Greece