1. Oklahoma State University, Department of Psychology, Center for Pediatric Psychology, Stillwater, OK ;
2. University of California San Francisco Medical Center, Department of Urology, San Francisco, CA ;
3. Ann & Robert H. Lurie Children's Hospital of Chicago, Department of Urology, Chicago, IL ;
4. Children's Hospital of Philadelphia, Division of Urology, Philadelphia, PA ;
5. University of Colorado Anschutz Medical Campus, Department of Pediatrics, Division of Endocrinology, Aurora, CO ;
6. New York Presbyterian Weill Cornell Medicine, Department of Urology, Komansky Children's Hospital, New York, NY; and
7. Cook Children's Medical Center, Department of Pediatric Urology, Fort Worth, TX.