1. Department of Nuclear Medicine, Ludwig-Maximilian University, Munich, Germany
2. Department of Nuclear Medicine, Technische Universität München, Munich, Germany
3. Dementia Research Section and Memory Clinic, Alzheimer Memorial Center and Geriatric Psychiatry Branch, Department of Psychiatry Ludwig-Maximilian University, Munich, Germany
4. Department of Nuclear Medicine, University Mainz, Mainz, Germany
5. Department of Psychiatry, University Rostock, Rostock, Germany
6. DZNE, German Center for Neurodegenerative Disorders, Rostock, Germany
7. Institute of Psychology, University of Osnabrueck, Osnabrueck, Germany
8. Discipline of Psychiatry, School of Medicine & Trinity College Institute of Neuroscience (TCIN), Laboratory of Neuroimaging and Biomarker Research, Trinity College, University of Dublin; The Adelaide and Meath Hospital Incorporating the National Children's Hospital (AMiNCH), Ireland
9. Institute for Stroke and Dementia Research, Klinikum Großhadern, Ludwig-Maximilian University, Munich, Germany