1. Clinical Division of Neurogeriatrics, Department of Neurology, Medical University of Graz, Graz, Austria
2. Institute for Medical Informatics, Statistics and Documentation, Medical University of Graz, Graz, Austria
3. Department of Neurology, Medical University of Graz, Graz, Austria
4. Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz, Austria
5. Neurology Clinic and Policlinic, MS Center and Research Center for Clinical Neuroimmunology and Neuroscience Basel (RC2NB), University Hospital Basel, University of Basel, Basel, Switzerland