1. Comprehensive Access and Delivery Research and Evaluation (CADRE) Center, Iowa City VA Health Care System, Iowa City, Iowa
2. Departments of Obstetrics and Gynecology and Urology, University of Iowa Carver College of Medicine, Iowa City, Iowa
3. Department of Epidemiology, University of Iowa College of Public Health, Iowa City, Iowa
4. Department of Obstetrics and Gynecology, University of Utah, Salt Lake City, Utah
5. Department of Radiology, University of Iowa Carver College of Medicine, Iowa City, Iowa
6. Department of Biostatistics, University of Iowa College of Public Health, Iowa City, Iowa
7. Department of Psychiatry, University of Iowa Carver College of Medicine, Iowa City, Iowa