1. Department of Obstetrics & Gynecology, The Urogynecology Center, Overland Park, Kansas, and Kansas University Medical Center, Kansas City, Kansas.
2. Department of Obstetrics & Gynecology, University of Rochester School of Medicine and Dentistry, Rochester, New York.
3. Department of Obstetrics & Gynecology, Northwestern University, Feinberg School of Medicine, Evanston, Illinois.