1. Division of Neonatal and Developmental Medicine, Department of Pediatrics, Stanford Prevention Research Center, Stanford University School of Medicine, Stanford, California
2. Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Stanford University School of Medicine, Stanford, California
3. Rory Meyers College of Nursing, New York University, New York, New York
4. California Maternal Quality Care Collaborative, Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Stanford University School of Medicine, Stanford, California
5. Division of Epidemiology, University of California Berkeley School of Public Health, Berkeley, California
6. Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of California Irvine School of Medicine, Irvine, California
7. Division of Cardiology, Department of Medicine, University of California Irvine School of Medicine, Irvine, California
8. Division of Neonatal and Developmental Medicine, Department of Pediatrics, Stanford University School of Medicine, Stanford, California