1. Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, Maryland
2. Department of Women's Health, The University of Texas at Austin Dell Medical School, Austin, Texas
3. Department of Obstetrics and Gynecology, Washington University School of Medicine in St. Louis, St. Louis, Missouri
4. Department of Obstetrics and Gynecology, Texas A&M University School of Medicine, Bryan, Texas
5. Department of Obstetrics, Gynecology, & Reproductive Sciences, University of California San Francisco School of Medicine, San Francisco, California