1. Department of Urology, University Medical Centre Utrecht, Utrecht, the Netherlands
2. Department of Urology, St. Antonius Hospital, Koekoekslaan, CM Nieuwegein, the Netherlands
3. Department of Surgery, Division of Vascular Surgery, University Medical Centre Utrecht, Utrecht, the Netherlands
4. Department of Surgery, Division of Vascular Surgery, University Medical Centre Groningen, Groningen, the Netherlands
5. Department of Interventional Radiology, University Medical Centre Utrecht, Utrecht, the Netherlands
6. Department of Pediatric Urology, Wilhelmina Children’s Hospital UMC Utrecht, Utrecht, the Netherlands
7. Department of Pediatric Surgery, Division of Pediatric Urology and Andrology, I.M. Sechenov First Moscow State Medical University, Moscow, Russia
8. Department of Urology, The Netherlands Cancer Institute, Amsterdam, the Netherlands