1 Section of Vascular and Interventional Radiology, Department of Radiology, University of Washington, 1959 Northeast Pacific Street, Seattle, WA, 98195, USA. jeffreychick@gmail.com.
2 The Deep Vein Institute, University of Washington, 1959 Northeast Pacific Street, Seattle, WA, 98195, USA. jeffreychick@gmail.com.
3 Section of Vascular and Interventional Radiology, Department of Radiology, University of Washington, 1959 Northeast Pacific Street, Seattle, WA, 98195, USA.
4 Inland Imaging, 5715 N Lidgerwood Street, Spokane, WA, 99208, USA.
5 Section of Vascular and Interventional Radiology, Department of Radiology, University of Wisconsin, 600 Highland Avenue, Madison, WI, 53792, USA.
6 The Deep Vein Institute, University of Washington, 1959 Northeast Pacific Street, Seattle, WA, 98195, USA.