1. Division of General Obstetrics and Gynecology, Alpert Medical School of Brown University, Women and Infants Hospital of Rhode Island, Providence
2. Institute for Research and Education to Advance Community Health, Elson S. Floyd College of Medicine, Washington State University, Seattle
3. Departments of Obstetrics and Gynecology and Pediatrics, University of Chicago, Illinois
4. Harris School of Public Policy, University of Chicago, Illinois