1. Vanderbilt University Medical Center, Department of Radiology and Radiological Sciences, Nashville, TN
2. Case Western Reserve University – The MetroHealth System, Department of Radiology, Cleveland, OH
3. Vanderbilt University School of Medicine, Nashville, TN
4. University of Massachusetts Medical School, Department of Radiology, Worcester, MA
5. Vanderbilt University Medical Center, Vanderbilt-Ingram Cancer Center, Nashville, TN
6. Veterans Health Administration, Tennessee Valley Healthcare System Geriatric Research, Education, and Clinical Center, Nashville, TN