1. Department of Radiation Oncology, Fox Chase Cancer Center, Philadelphia, PA
2. Department of Biostatistics, Fox Chase Cancer Center, Philadelphia, PA
3. Division of Urologic Oncology, Department of Surgical Oncology, Fox Chase Cancer Center, Philadelphia, PA
4. Division of Genitourinary Oncology, Department of Hematology and Oncology, Fox Chase Cancer Center, Philadelphia, PA
5. Department of Radiation Oncology, University of Miami Miller School of Medicine, Miami, FL