1. Institute of Pathology, University Hospital Erlangen, Friedrich-Alexander-University, Erlangen-Nuremberg, Germany
2. Center of Pneumology, Psychosomatic Medicine and Psychotherapy, Clinical Center Donaustauf, Donaustauf, Germany
3. Department of Urology, University Hospital Erlangen, Friedrich-Alexander-University, Erlangen-Nuremberg, Germany
4. Institute of Pathology, Department of Urology, University of Regensburg, Regensburg, Germany
5. St Josef Medical Centre, Department of Urology, University of Regensburg, Regensburg, Germany.