1. Department of Urology; Hospital Göttlicher Heiland; Vienna Austria
2. Klinik and Poliklinik of Urology and Kidney Transplantation; University Hospital; Martin-Luther-University, Halle-Wittenberg; Halle/Saale Germany
3. Thomayer Hospital; Department of Urology and 1st and 3rd Medical Faculty; Charles University; Prague Czech Republic
4. Neuro-Urology Department; CTO-Spinal Unit Hospital; Turin Italy
5. Center for Medical Statistics, Informatics, and Intelligent Systems; Vienna Austria
6. Department of Urology; Medical University Vienna; Vienna Austria