1. Department of Radiation Oncology; Division of Radiation Oncology; University of Texas MD Anderson Cancer Center; Houston TX USA
2. Department of Urology; Division of Surgery; University of Texas MD Anderson Cancer Center; Houston TX USA
3. Department of Genitourinary Medical Oncology; Division of Cancer Medicine; University of Texas MD Anderson Cancer Center; Houston TX USA
4. Department of Radiation Oncology; University of Colorado School of Medicine; Aurora CO USA
5. Department of Radiation Oncology; Long Beach Memorial Medical Center; Long Beach CA USA
6. Department of Biostatistics; University of Texas MD Anderson Cancer Center; Houston TX USA