1. Department of Radiology, University of Alabama at Birmingham, 619 19th St S, JTN 452, Birmingham, AL 35249-6830.
2. Department of Radiology, University of Mississippi Medical Center, Jackson, MS.
3. Department of Radiology, Cleveland Clinic Foundation, Cleveland, OH.
4. Department of Radiology, Duke University Medical Center, Durham, NC.
5. Department of Radiology, Emory University, Atlanta, GA.
6. Department of Urology, Yale University, New Haven, CT.
7. Center for Biostatistics and Bioinformatics, University of Mississippi Medical Center, Jackson, MS.
8. Department of Internal Medicine, University of Texas Health Science Center at Houston, Houston, TX.