1. Department of Pediatrics, University of California, San Francisco, California
2. Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
3. Department of Pediatrics, University of Rochester Medical Center, Rochester, New York
4. Department of Pediatrics, University of Washington School of Medicine, Seattle, Washington
5. Department of Pediatrics, University of Maryland, School of Medicine, Baltimore, Maryland
6. Department of Pediatrics, Children's Hospital of Orange County, Orange, California
7. Department of Pediatrics, University of Massachusetts Chan Medical School, Worcester, Massachusetts
8. Department of Pediatrics, University of Texas Health San Antonio, San Antonio, Texas