1. Department of Pediatrics, Keck School of Medicine, University of Southern California, Los Angeles, California
2. Department of Pediatrics, Baylor College of Medicine, Houston, Texas
3. Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, Arkansas
4. Department of Pediatrics, Northwestern University Medical School, Chicago, Illinois
5. Department of Pediatrics, Ohio State University College of Medicine, Columbus, Ohio
6. Department of Pediatrics, Wake Forest University School of Medicine, Winston-Salem, North Carolina
7. Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
8. Division of Infectious Diseases, Children’s Hospital-San Diego, San Diego, California