1. Division of Urology, Duke University Medical Center, Durham, NC, USA
2. Department of Urology, University of Alabama-Birmingham, Birmingham, AL, USA
3. Centers for Disease Control and Prevention, National Center on Birth Defects and Developmental Disabilities, Atlanta, GA, USA
4. Division of Pediatric Pulmonary Medicine, Children’s Hospital of Richmond at Virginia Commonwealth University, Richmond, VA, USA
5. Division of Urology, Primary Children’s Hospital, Salt Lake City, UT, USA
6. Carter Consulting, Inc., Atlanta, GA, USA