1. Jožef Stefan Institute , Ljubljana , Slovenia
2. Institute of Physiology, Medical Faculty, University of Ljubljana , Ljubljana , Slovenia
3. Department of Vascular Neurology and Intensive Therapy, University Medical Centre Ljubljana , Ljubljana , Slovenia
4. Department of Diagnostic and Interventional Neuroradiology, Clinical Institute of Radiology, University Medical Centre Ljubljana , Ljubljana , Slovenia
5. Department of Diagnostic and Interventional Radiology, General Hospital Slovenj Gradec , Ljubljana , Slovenia