MAZEN A. Ghanem - From the Departments of Pediatric Urology and Urology, University Hospital Groningen (MAG, RJMN), Groningen, The Netherlands, and Pediatric Urology Section, Urology Department, Menoufiya University (MAG), Menofiya, Egypt
RIEN J.M. Nijman - From the Departments of Pediatric Urology and Urology, University Hospital Groningen (MAG, RJMN), Groningen, The Netherlands, and Pediatric Urology Section, Urology Department, Menoufiya University (MAG), Menofiya, Egypt