1. Institute of Clinical Radiology, University Hospital of Muenster, Muenster, Germany
2. Department of Pediatrics, University Hospital of Muenster, Muenster, Germany
3. Department of Neurology, University Hospital of Muenster, Muenster, Germany
4. Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
5. Department of Neuroradiology, Alfried-Krupp Hospital, Essen, Germany
6. Department of Neuroradiology, Klinikum Stuttgart, Stuttgart, Germany
7. Department of Neuroradiology, Medical University of Innsbruck, Innsbruck, Austria
8. Department for Diagnostic and Interventional Neuroradiology, University of Munich, Campus Grosshadern, Munich, Germany
9. Department of Neuroradiology, Aachen University, Aachen, Germany
10. Diagnostic and Interventional Neuroradiology, Eberhard Karls University Tuebingen, Tuebingen, Germany
11. Department of Radiology and Neuroradiology, Bochum, Germany
12. Department of Diagnostic and Interventional Neuroradiology, University Medical Center Goettingen, Goettingen, Germany
13. Department of Neuroradiology, University Hospital Carl Gustav Carus, Dresden, Germany
14. Department of Neuroradiology, Saarland University Hospital, Homburg, Germany
15. Department of Neurology and Neurorehabilitation, Mondino Foundation, Pavia, Italy
16. Division of Neuroradiology and Musculoskeletal Radiology, Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
17. Division of Cardiovascular and Interventional Radiology, Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
18. Department of Radiology and Neuroradiology, University Hospital of Schleswig-Holstein, Kiel, Germany
19. Section of Neuroradiology, University of Ulm, Guenzburg, Germany
20. Department for Neuroradiology, University Hospital Leipzig, Leipzig, Germany
21. Department of Neuroradiology, University Hospital of Magdeburg, Magdeburg, Germany
22. Department of Diagnostic and Interventional Neuroradiology, Hannover Medical School, Hannover, Germany
23. Department of Neuroradiology, Kepler University Hospital, Johannes Kepler University Linz, Linz, Austria
24. Institute of Neuroradiology, University Hospital Duesseldorf, Duesseldorf, Germany
25. Department of Neuroradiology at Heidelberg University Hospital, Heidelberg, Germany
26. Department of Radiology, University Hospital Regensburg, Regensburg, Germany
27. Department of Neuroradiology, University Hospital of Luebeck, Luebeck, Germany
28. Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
29. Division of Child Neurology, Department of Neurology, Stanford University, Stanford, California
30. Department of Neuroradiology, University Hospital of Cologne, Cologne, Germany
31. Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, University of Duisburg-Essen, Duisburg, Germany
32. Institute of Epidemiology and Social Medicine, University of Muenster, Muenster, Germany