1. Obstetrics and Gynecology Epidemiology Center; Brigham and Women's Hospital; Boston MA
2. Department of Global Education; Harvard Medical School; Boston MA
3. Departments of Epidemiology and Pediatrics; Geisel School of Medicine at Dartmouth; Hanover NH
4. Department of Epidemiology; Harvard T.H. Chan School of Public Health; Boston MA
5. Department of Obstetrics; Gynecology, and Reproductive Biology, Harvard Medical School; Boston MA