1. Division of Neonatology, Department of Pediatrics, Seattle Children's Hospital, University of Washington School of Medicine, Seattle, Washington
2. Division of Neonatology, Department of Pediatrics, Children's Hospital Los Angeles, Keck School of Medicine, Fetal and Neonatal Institute, University of Southern California, Los Angeles, California
3. Division of Neonatology, Department of Pediatrics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
4. Division of Neonatology, Department of Pediatrics, University of Rochester Medical Center, Rochester, New York
5. Division of Newborn Medicine, Floating Hospital for Children at Tufts Medical Center, Boston, Massachusetts
6. Division of Neonatal and Developmental Medicine, Department of Pediatrics, Stanford University School of Medicine, Palo Alto, California
7. Division of Neonatology, Department of Pediatrics, Sainte-Justine Hospital University Center, University of Montreal, Montreal, Canada
8. Department of Neonatology, Children's National Health System, Washington, District of Columbia
9. Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, Illinois
10. Department of Pediatrics, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina