Affiliation: | aDivision of Urogynecology and Reconstructive Pelvic Surgery, Department of Obstetrics and Gynecology, University of Pennsylvania School of Medicine, Philadelphia, PA;bDepartment of Biostatistics and Epidemiology, Center for Clinical Epidemiology and Biostatistics, University of Pennsylvania School of Medicine, Philadelphia, PA;cDepartment of Medicine, University of Pennsylvania School of Medicine, Philadelphia, PA |