1. Department of Radiology, University of Southern California Keck School of Medicine, Los Angeles, California
2. Department of Radiology, West Virginia University School of Medicine, Morgantown, West Virginia
3. Division of Interventional Radiology, Department of Radiology, West Virginia University School of Medicine, Morgantown, West Virginia
4. Department of Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland
5. Department of Radiology, WVU School of Medicine, Morgantown, West Virginia