1 1 Department of Urology, Division of Pediatric Urology, University of Washington and Seattle Children's Hospital , Seattle, Washington.
2 2 Department of Pediatrics, Division of Oncology, University of Washington and Seattle Children's Hospital , Seattle, Washington.
3 3 Southside Urology and Nephrology , Danville, Virginia.
4 4 Treuman Katz Center for Pediatric Bioethics, Seattle Children's Hospital and Department of Pediatrics, University of Washington School of Medicine , Seattle, Washington.