1. Division of Neonatology, Department of Pediatrics, Evanston Hospital, NorthShore University HealthSystem, Evanston, Illinois
2. Department of Pediatrics, University of Chicago Pritzker School of Medicine, Chicago, Illinois
3. Tennessee Valley Neonatology, Huntsville, Alabama
4. Department of Research, NorthShore University HealthSystem Research Institute, Evanston, Illinois
5. Division of Neonatology, Department of Pediatrics, University of Chicago Comer Children's Hospital, Chicago, Illinois
6. Department of Pediatrics, University of Mississippi Medical Center, Jackson, Mississippi
7. Department of Obstetrics and Gynecology, Indiana University School of Medicine, Indianapolis, Indiana
8. Division of Neonatal-Perinatal Medicine, Department of Pediatrics, University of Michigan C.S. Mott Children's Hospital, Ann Arbor, Michigan
9. Department of Pediatrics, University of Chicago Comer Children's Hospital, Chicago, Illinois
10. Division of Neonatology, Department of Pediatrics, University of Mississippi Medical Center, Jackson, Mississippi
11. Department of Internal Medicine, St Vincent Hospital, Indianapolis, Indiana
12. Department of Pediatrics, Division of Neonatology, Medical College of Wisconsin, Milwaukee, Wisconsin