1. Department of Diagnostic and Interventional Radiology, University Hospital Wurzburg, Wurzburg, Germany
2. Department of Interventional and Diagnostic Radiology, Klinikum Bayreuth GmbH, Bayreuth, Germany
3. Department of Radiology, University of Wisconsin-Madison, Madison, United States
4. Institute of Diagnostic and Interventional Radiology, University Hospital Wurzburg, Wurzburg, Germany