1. Department of Perinatology and Neonatal Intensive Care Unit, Providence St Vincent Medical Center, Portland, Oregon
2. Neonatal Intensive Care Unit, Medical University of South Carolina, Charleston, South Carolina
3. Neonatal Intensive Care Unit and Department of Perinatology, Akron Children's Hospital and Akron General Medical Center and Summa Health System, Akron, Ohio
4. Center for Advanced Pediatric Education, Stanford University, Stanford, California
5. Vermont Oxford Network, Burlington, Vermont