Duncan T Wilcox, Professor, Chair, Pediatric Urology, The Children's Hospital, University of Colorado Denver School of Medicine, USA. Martin A Koyle, Professor of Surgery, University of Toronto; Division Head, Paediatric Urology, Women's Auxiliary Chair in Urology & Regenerative Medicine, The Hospital for Sick Children, Canada. Prasad P Godbole, Consultant Paediatric Urologist and Honorary Senior Lecturer, Clinical Director for Surgery, Sheffield Children’s NHS Foundation Trust and University of Sheffield, Sheffield, UK.