1. Department of Diagnostic Imaging, University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd, Unit 1473, Houston, TX 77030
2. Department of Diagnostic Imaging, Mayo Clinic College of Medicine and Science, Scottsdale, AZ
3. Department of Diagnostic Imaging, University of Missouri Health Care, Columbia, MO
4. Department of Diagnostic Imaging, University of Wisconsin School of Medicine and Public Health, Madison, WI
5. Department of Diagnostic Imaging, University of Utah, Salt Lake City, UT