1. Division of Urology, Perelman School of Medicine University of Pennsylvania Philadelphia Pennsylvania USA
2. Department of Obstetrics and Gynecology Washington University in St. Louis St. Louis Missouri USA
3. Department of Obstetrics and Gynecology University of Kansas Kansas City Kansas USA
4. School of Nursing University of Michigan Ann Arbor Michigan USA
5. Department of Obstetrics and Gynecology, Stritch School of Medicine Loyola University Chicago Chicago Illinois USA
6. Department of Urology University of Minnesota Minneapolis Minnesota USA
7. Department of Obstetrics and Gynecology Northwestern University Feinberg School of Medicine Chicago Illinois USA
8. Department of Obstetrics, Gynecology, and Reproductive Sciences, UC San Diego School of Medicine University of California San Diego La Jolla California USA
9. Department of Medicine, Division of Gerontology, Geriatrics and Palliative Care, School of Medicine University of Alabama at Birmingham Birmingham Alabama USA
10. Birmingham/Atlanta Geriatric Research, Education, and Clinical Center Birmingham Alabama USA
11. Division of Biostatistics, School of Public Health University of Minnesota Minneapolis Minnesota USA