1. Department of Radiology, West Virginia University Health Sciences Center, 1 Medical Center Dr, Morgantown, WV 26505.
2. Department of Radiology, UT Southwestern Medical Center, Dallas, TX.
3. Department of Urology, UT Southwestern Medical Center, Dallas, TX.
4. Department of Internal Medicine, UT Southwestern Medical Center, Dallas, TX.
5. Simmons Comprehensive Cancer Center, UT Southwestern Medical Center, Dallas, TX.