1. Department of Nuclear Medicine, University of Leipzig, Leipzig, Germany
2. Max-Planck-Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
3. Siemens Healthcare GmbH, Diagnostic Imaging, Magnetic Resonance, Research & Development, Erlangen, Germany
4. LREN, Department for Clinical Neurosciences, CHUV, University of Lausanne, Lausanne, Switzerland
5. Department of Psychiatry, University of Leipzig, Leipzig, Germany
6. Clinic for Cognitive Neurology, University Leipzig, Germany