1. Department of Tumour Pathology and Pathomorphology, Nicolaus Copernicus University Collegium Medicum in Bydgoszcz, Bydgoszcz 85-796, Poland
2. Department of Tumour Pathology and Pathomorphology, Oncology Centre-Prof. Franciszek Łukaszczyk Memorial Hospital, Bydgoszcz 85-796, Poland
3. Department of Urology, Oncology Centre-Prof. Franciszek Łukaszczyk Memorial Hospital, Bydgoszcz 85-796, Poland
4. Departments of Dermatology and Pathology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
5. VA Medical Center, Birmingham, AL 35233, USA