1. Department of Diagnostic and Interventional Neuroradiology University Medical Center Hamburg‐Eppendorf Hamburg Germany
2. Institute of Medical Biometry and Epidemiology University Medical Center Hamburg‐Eppendorf Hamburg Germany
3. Department of Neuroradiology University Medical Center Marburg Marburg Germany
4. Department of Radiology Comenius University's Jessenius Faculty of Medicine and University Hospital Martin Slovakia