1. Department of Urology, School of Medicine, Wayne State University, Detroit, MI 48201, USA
2. Department of Surgery, College of Human Medicine, Michigan State University, Grand Rapids, MI 49503, USA
3. Section of Urology, Sutter Memorial Hospital, Sacramento, CA, 95819, USA
4. Pediatric Urology Medical Group, Inc., Santa Monica, CA, 90403, USA
5. Department of Pediatric Urology, Helen DeVos Children’s Hospital, Grand Rapids, MI 49503, USA