1. Department of Psychiatry, Psychotherapy and Psychosomatics, Division of Psychiatry I, Medical University of Innsbruck, Innsbruck, Austria
2. Department of Psychiatry and Psychotherapy A, General Hospital, Hall, Austria
3. Department of Neurology, Medical University of Vienna, Vienna, Austria
4. Department of Neurology 2, Kepler University Hospital, Med Campus III, Linz, Austria
5. Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
6. Department of Neurology, Division of Neurogeriatrics, Medical University of Graz, Graz, Austria
7. Department of Psychology, University of Akureyri, Akureyri, Iceland