| Affiliation: | 1. Department of Radiology, Neuroradiology Division, University of Virginia, Charlottesville, Virginia;2. Department of Radiology, University of Virginia, Charlottesville, Virginia;3. United States Navy, Bethesda, Maryland;1. Department of Radiology, Massachusetts General Hospital, Boston, Massachusetts;2. Harvard Medical School, Boston, Massachusetts;3. Department of Quality and Safety, American College of Radiology, Reston, Virginia;4. Harvard School of Public Health, Cambridge, Massachusetts;5. Scott and White Department of Radiology, Texas A&M College of Medicine, Temple, Texas |
