1. Surgical Services/Urology Section, Rocky Mountain Regional VA Medical Center, VA Eastern Colorado Health Care System, Aurora, Colorado, USA.
2. Division of Urology, Department of Surgery, University of Colorado School of Medicine, Aurora, Colorado, USA.
3. Medical Physics and Radiation Safety, Imaging Service, Rocky Mountain Regional VA Medical Center, VA Eastern Colorado Health Care System, Aurora, Colorado, USA.
4. Colorado Associates in Medical Physics, Colorado Springs, Colorado, USA.