1. Department of Urology, UAB Medical Center, Birmingham, Alabama, USA
2. Department of Radiation Oncology, University of Alabama Birmingham (UAB) Medical Center, Birmingham, Alabama, USA
3. Department of Biostatistics, UAB Medical Center, Birmingham, Alabama, USA
4. Department of Medicine, Section of Hematology-Oncology, UAB Medical Center, Birmingham, Alabama, USA
5. Department of Medicine, UAB Medical Center, Birmingham, Alabama, USA
6. Birmingham VA Medical Center, Birmingham, Alabama, USA