1. Department of Obstetrics and Gynecology NorthShore University HealthSystem, Evanston, Illinois
2. Department of Obstetrics and Gynecology, University of Chicago Pritzker School of Medicine, Chicago, Illinois
3. Medical and Social Sciences, Northwestern University Feinberg School of Medicine, Chicago, Illinois
4. Department of Women, Children and Family Nursing, Rush University College of Nursing, Chicago, Illinois
5. Research Institute, NorthShore University HealthSystem, Evanston, Illinois
6. Community and Health Sciences, University of Illinois Chicago School of Public Health, Chicago, Illinois
7. Institute for Public Health and Medicine, Northwestern University Center for Healthcare Studies, Chicago, Illinois