1. Division of Neuroradiology, Leipzig University Hospital, Leipzig, Germany
2. Department for Diagnostic and Interventional Radiology, Leipzig University Hospital, Leipzig, Germany
3. Institute for Diagnostic and Interventional Radiology, Göttingen University Hospital, Göttingen, Germany
4. Diagnostic and Interventional Radiology, Heidelberg University Hospital, Heidelberg, Germany
5. Department of Diagnostic and Interventional Radiology, Hokkaido University Hospital, Sapporo, Japan
6. Department for Radiology, Halle/Saale University Hospital, Halle/Saale, Germany