1. Department of Urology and Urologic Oncology; Alfried Krupp Krankenhaus; Essen Germany
2. Department of Urology and Pediatric Urology; University Medical Center, Johannes-Gutenberg-University; Mainz Germany
3. OLV Vattikuti Robotic Surgery Institute; OLV Hospital Aalst; Aalst Belgium
4. Department of Urology; OLV Hospital Aalst; Aalst Belgium