1. The James Buchanan Brady Urological Institute, The Johns Hopkins University School of Medicine, Baltimore, Maryland
2. Department of Urology, The Johns Hopkins University School of Medicine, Baltimore, Maryland
3. The Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins University School of Medicine, Baltimore, Maryland
4. Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, Maryland
5. Department of Urology, Northwestern University Feinberg School of Medicine, Chicago, Illinois