1 Section of Vascular and Interventional Radiology, Department of Radiology, University of Washington, 1959 Northeast Pacific Street, Seattle, WA, 98195, USA.
2 Division of Vascular and Interventional Radiology, Department of Radiology, University of Southern California, 1500 San Pablo Street, Los Angeles, CA, 90033, USA.
3 Department of Radiology, University of Wisconsin, 1675 Highland Ave, Madison, WI, 53792, USA.
4 Section of Vascular and Interventional Radiology, Department of Radiology, University of Washington, 1959 Northeast Pacific Street, Seattle, WA, 98195, USA. jeffreychick@gmail.com.
5 Division of Vascular and Interventional Radiology, Department of Radiology, University of Southern California, 1500 San Pablo Street, Los Angeles, CA, 90033, USA. jeffreychick@gmail.com.