1. Department of Urology, St. Elisabeth Hospital Straubing Brothers of Mercy Hospital Straubing Germany
2. Caritas St. Josef Medical Center Teaching Hospital of the University Clinic Regensburg Regensburg Germany
3. Department of Urology Otto‐von‐Guericke‐University Magdeburg Magdeburg Germany
4. Department of Urology Werner Forssmann Hospital Eberswalde Germany
5. Department of Urology University Medicine Greifswald Greifswald Germany