1. Institute of Pharmacology, Toxicology, and Pharmacy; Ludwig Maximilian University of Munich; Munich Germany
2. Department of Experimental Biomedicine and Clinical Neurosciences; University of Palermo; Palermo Italy
3. Department of Nuclear Medicine; University Hospital of Munich; Ludwig Maximilian University of Munich; Munich Germany
4. German Center for Vertigo and Balance Disorders; Ludwig Maximilian University of Munich; Munich Germany
5. Department of Psychiatry and Psychotherapy; Charité; Berlin Germany
6. Central Institute of Mental Health Mannheim; Medical Faculty of Mannheim; University of Heidelberg; Mannheim Germany