1. Vermont Oxford Network, Burlington
2. Department of Pediatrics, Robert Larner MD College of Medicine, University of Vermont, Burlington
3. Department of Mathematics and Statistics, College of Engineering and Mathematical Sciences, University of Vermont, Burlington
4. Perinatal Epidemiology and Health Outcomes Research Unit, School of Medicine, Division of Neonatology, Department of Pediatrics, Stanford University, Lucile Packard Children’s Hospital, Palo Alto, California
5. California Perinatal Quality Care Collaborative, Palo Alto
6. Department of Statistics, Baskin School of Engineering, University of California, Santa Cruz, Santa Cruz
7. Division of Neonatology, Department of Pediatrics, The Children’s Hospital of Philadelphia, Perelman School of Medicine, University of Pennsylvania, Philadelphia
8. Leonard Davis Institute of Health Economics, Wharton School, University of Pennsylvania, Philadelphia
9. Health Economics Resource Center and Center for Implementation to Innovation, Veterans Affairs Palo Alto Healthcare System, Menlo Park, California
10. Department of Health Policy and Administration, Pennsylvania State University, State College
11. Department of Sociology and Criminology, Pennsylvania State University, State College