1. Department of Obstetrics and Gynecology The Ohio State University Columbus OH USA
2. Department of Epidemiology Gillings School of Global Public Health The University of North Carolina at Chapel Hill Chapel Hill NC USA
3. Department of Medicine University of Alabama Birmingham AB USA
4. Department of Psychiatry and Behavioral Sciences University of Miami Miami FL USA
5. Department of Medicine Emory University Atlanta GA USA
6. Department of Obstetrics and Gynecology Northwestern University Chicago IL USA
7. Department of Obstetrics Gynecology & Reproductive Sciences University of California San Francisco San Francisco CA USA
8. Department of Medicine Georgetown University Washington DC USA
9. Department of Obstetrics and Gynecology SUNY Downstate Health Sciences University Brooklyn NY USA
10. Maimonides Medical Center Brooklyn NY USA
11. Department of Obstetrics and Gynecology Albert Einstein College of Medicine Bronx NY USA
12. Department of Obstetrics and Gynecology University of North Carolina at Chapel Hill Chapel Hill NC USA
13. Department of Medicine University of North Carolina at Chapel Hill Chapel Hill NC USA