1. Charité – Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
2. Berlin Institute of Health, Department of Radiology, Berlin, Germany
3. Berlin Institute of Health, Department of Urology and Berlin Institute for Urologic Research, Berlin, Germany
4. University Medical Center Regensburg, Department of Radiology, Regensburg, Germany