1. Department of Neurology, Medical University of Vienna, Austria
2. Department of Medical Statistics and Informatics, Medical University of Vienna, Austria
3. Department of Neurology, Medical University of Innsbruck, Austria
4. Department of Neurology, Division of Neurogeriatrics, Medical University of Graz, Austria
5. Department of Psychiatry and Psychotherapy, Regional Hospital Hall in Tirol, Austria
6. Department of Neurology, General Hospital Linz, Austria