1. Division of Special Neurology, Department of Neurology, Medical University of Graz, Graz, Austria;
2. Department of Clinical and Experimental Medicine, Section of Internal Medicine, Gerontology and Geriatrics, University of Ferrara, Ferrara, Italy;
3. Division of General Neurology, Department of Neurology, Medical University of Graz, Graz, Austria;
4. Division of Neuroradiology, Department of Radiology, Medical University of Graz, Graz, Austria;
5. Institute for Medical Informatics, Statistics and Documentation, Medical University of Graz, Graz, Austria.