1. Northwestern University School of Medicine, Asher Center for the Study and Treatment of Depressive Disorders, Chicago, Illinois
2. Northwestern University School of Medicine, Department of Psychiatry, Chicago, Illinois
3. Northwestern University School of Medicine, Department of Obstetrics and Gynecology, Chicago, Illinois
4. University of British Columbia, School of Population and Public Health, Department of Pediatrics, Vancouver, British Columbia, Canada
5. Harvard Medical School, Brigham and Women’s Hospital, Boston, Massachusetts