[1] Women's Health, The University of Texas at Austin Dell Medical School, Austin, TX
[2] Naval Medical Center, San Diego, CA
[3] Obstetrics and Gynecology, State University of New York Upstate Medical University, Syracuse, NY
[4] Department of Obstetrics and Gynecology, Thomas Jefferson University, Philadelphia, PA
[5] Department of Gynecology and Obstetrics, John's Hopkins University School of Medicine, Baltimore, MD