1. Department of Radiology, Division of Interventional Radiology, The University of Alabama at Birmingham, Birmingham, Alabama
2. Department of Radiology, Division of Interventional Radiology, University of Kentucky, Lexington, Kentucky
3. Saint Louis University School of Medicine, St. Louis, Missouri
4. Department of Diagnostic and Interventional Imaging, Section of Interventional Radiology, The University of Texas Health Science Center at Houston, Houston, Texas
5. Department of Radiology and Medicine, The University of Alabama at Birmingham, Birmingham, Alabama