1. German Center for Neurodegenerative Diseases; Rostock Germany
2. Department of Radiology and Nuclear Medicine; VU University Medical Center; Amsterdam The Netherlands
3. Department of Psychiatry; University Medical Center Mainz; Mainz Germany
4. Neuroimaging Research Unit, Institute of Experimental Neurology, Division of Neuroscience; Scientific Institute and University Vita-Salute San Raffaele; Milan Italy
5. Department of Geriatric Psychiatry, Central Institute of Mental Health, Medical Faculty Mannheim; University of Heidelberg; Mannheim Germany
6. Department of Radiology; University Medicine Rostock; Rostock Germany
7. Mobile Multimedia Information Systems Group; University of Rostock; Rostock Germany
8. Clinic for Psychosomatic and Psychotherapeutic Medicine; University Medicine Rostock; Rostock Germany