1. Department of Neurology, Medical University, Innsbruck, Austria
2. Division of Neurogeriatrics, Department of Neurology, Medical University of Graz, Graz, Austria
3. Department of Neurology, General Hospital, Linz, Austria
4. Department of Neurology, Medical University of Vienna, Wien, Austria
5. Department of Geriatric Psychiatry, Landesnervenklinik Sigmund Freud, Graz, Austria
6. Department of Psychiatry and Psychotherapy, Regional Hospital, Hall in Tirol, Austria
7. Department of Neurology and Geriatric Psychiatry, Nervenklinik Wagner-Jauregg, Linz, Austria
8. Department of Neurology and Psychosomatic Medicine, Regional Hospital, Villach, Austria
9. Department of Neurology, Regional Hospital, Horn, Austria