1. Robert D. Jeffs Division of Pediatric Urology, James Buchanan Brady Urological Institute, Johns Hopkins Hospital, Johns Hopkins Medical Institutions, Charlotte Bloomberg Children's Hospital, Baltimore, Maryland
2. Pediatric & Adolescent Urology, Inc. and Division of Pediatric Urology, Akron Children's Hospital, Akron, Ohio
3. Division of Pediatric Radiology and Pediatric Neuroradiology, Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins Medical Institutions, Baltimore, Maryland