1. Department of Urology, Emory University, Atlanta, Georgia
2. Department of Abdominal Radiology, Imaging Institute, Cleveland Clinic, Cleveland, Ohio
3. Department of Radiology, Imaging Institute, Cleveland Clinic, Cleveland, Ohio
4. Department of Interventional Radiology, Imaging Institute, Cleveland Clinic, Cleveland, Ohio
5. Department of Radiology, Beth Israel Deaconess Medical Center, Boston, Massachusetts