1. Graduate Program in Public Health, Eastern Virginia Medical School, Norfolk, Virginia
2. Department of Obstetrics and Gynecology, Medical University of South Carolina, Charleston, South Carolina
3. Department of Obstetrics and Gynecology, University of Arkansas, Little Rock, Arkansas
4. Department of Obstetrics and Gynecology, Brown University, Providence, Rhode Island
5. Department of Obstetrics and Gynecology, Temple University, Philadelphia, Pennsylvania
6. Department of Obstetrics and Gynecology, Naval Medical Center Portsmouth, Portsmouth, Virginia
7. Department of Obstetrics and Gynecology, Eastern Virginia Medical School, Norfolk, Virginia
8. Department of Obstetrics and Gynecology, College of Physicians and Surgeons, Columbia University, New York