1. Division of Interventional Radiology and Image-Guided Medicine, Department of Radiology and Imaging Sciences, Emory University Hospital, Atlanta, Georgia
2. Division of Interventional Radiology, Department of Radiology, University of Vermont Medical Center, Burlington, Vermont
3. Division of Vascular and Interventional Radiology, Department of Radiology, University of Utah Hospital, Salt Lake City, Utah
4. Division of Cardiology, Mayo Clinic, Scottsdale, Arizona