1. Department of Radiology and Radiological Sciences, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, MD 20814.
2. Rowan School of Osteopathic Medicine, 42 East Laurel Road, Stratford,NJ 08084.
3. Department of Medicine, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda,MD 20814.
4. Department of Radiology, Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda,MD 20889.
5. Department of Diagnostic Radiology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX 77030.